Battery heating issues

I bought my iPhone yesterday. My phone gets heated up whenever I play any games,the heating goes when I stop playing and keep it aside
Please help me.I'm worried as I bought the phone yesterday.

Hello Sanju95
If you are curious about the operating temperature of your iPhone, check out the article below for further information for any questions that you may have.
iOS devices: Keeping device within acceptable operating temperatures
http://support.apple.com/kb/ht2101
Regards,
-Norm G.

Similar Messages

5s battery & heating issue (ios 8.1.3)!!!!!!!

i just bought 5s and updated it to ios 8.1.3, my maximum battery life is 4 and half hours of continues usage (just downloading apps and browsing and chat and no games), is that normal??

Hi Bebars100,
The resource below will provide information and tips to maximize the battery performance of your iPhone. If you follow these suggestions and still have issues with your new iPhone, it may require service.
Apple - Batteries - Maximizing Performance
https://www.apple.com/batteries/maximizing-performance/
“Battery life” is the amount of time your device runs before it needs to be recharged. “Battery lifespan” is the amount of time your battery lasts until it needs to be replaced. Maximize both and you’ll get the most out of your Apple devices
Your device is designed to perform well in a wide range of temperatures, with 62° to
72° F (16° to 22° C) as the ideal comfort zone. It’s especially important to avoid exposing your device to temperatures higher than 95° F (35° C), which can permanently damage battery capacity. That is, your battery won’t power your device as long on a given charge. Charging the device in high temperatures can damage it further. Even storing a battery in a hot environment can damage it irreversibly. When using your device in a very cold environment, you may notice a decrease in battery life, but this condition is temporary. Once the battery’s temperature returns to its normal operating range, its performance will return to normal as well.
iPhone, iPad, and iPod work best at 32° to 95° F (0° to 35° C). Storage temperature: -4° to 113° F (-20° to 45° C).
MacBook works best at 50° to 95° F (10° to 35° C). Storage temperature: -4° to 113° F (-20° to 45° C).
Charging your device when it’s inside certain styles of cases may generate excess heat, which can affect battery capacity. If you notice that your device gets hot when you charge it, take it out of its case first.
If you want to store your device long term, two key factors will affect the overall health of your battery: the environmental temperature and the percentage of charge on the battery when it’s powered down for storage. Therefore, we recommend the following:
Do not fully charge or fully discharge your device’s battery — charge it to around 50%. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge. Conversely, if you store it fully charged for an extended period of time, the battery may lose some capacity, leading to shorter battery life.
Power down the device to avoid additional battery use.
Place your device in a cool, moisture-free environment that’s less than 90° F (32° C).
If you plan to store your device for longer than six months, charge it to 50% every six months.
Depending on how long you store your device, it may be in a low-battery state when you remove it from long-term storage. After it’s removed from storage, it may require 20 minutes of charging with the original adapter before you can use it.
There are two simple ways you can preserve battery life — no matter how you use your device: adjust your screen brightness and use Wi-Fi.
Dim the screen or turn on Auto-Brightness to extend battery life.
To dim, swipe up from the bottom of any screen to open Control Center and drag the Brightness slider to the left.
Auto-Brightness adjusts your screen to lighting conditions automatically. To activate it, go to Settings > Display & Brightness and set Auto-Brightness to On.
When you use your device to access data, a Wi-Fi connection uses less power than a cellular network — so keep Wi-Fi on at all times. There are two ways to turn on Wi-Fi:
Swipe up to open Control Center, tap the Wi-Fi icon, and log in to a Wi-Fi network.
Go to Settings > Wi-Fi to access a Wi-Fi network.
iOS 8 is designed to be the most battery-efficient iOS ever. And it gives you more precise ways to manage your device’s battery life, because you can see the proportion of your battery used by each app (unless the device is charging). To view your usage, go to Settings > General > Usage > Battery Usage.
Here are the messages you may see listed below the apps you’ve been using:
Background Activity. This indicates that the battery was used by the app while it was in the background — that is, while you were using another app
To improve battery life, you can turn off the feature that allows apps to refresh in the background. Go to Settings > General > Background App Refresh and set the switch to Off.
If the Mail app lists Background Activity, you can choose to fetch data manually or increase the fetch interval. Go to Settings > Mail, Contacts, Calendars > Fetch New Data.
Location and Background Location. This indicates that the app is using location services.
You can optimize your battery life by turning off Location Services for the app. Turn off in Settings > Privacy > Location Services.
In Location Services, you can see each app listed with its permission setting. Apps that recently used location services have an indicator next to the on/off switch.
Home & Lock Screen. This indicates that the Home screen or Lock screen was displayed on your device. For example, the display was awakened by pressing the Home button or by a notification.
If an app frequently wakes your display with notifications, you can turn off push notifications for the app in Settings > Notifications. Tap App and set Allow Notifications to Off.
Get help with hardware features on your iPhone, iPad, and iPod touch - Apple Support
http://support.apple.com/en-us/HT201401
If you still have an issue with your device, contact Apple Support.
Regards,
- Judy

IPhone 5 battery/heating issue

I have had my iPhone5 almost a year. In the last couple of weeks I have noticed that it is significantly losing battery power, and when that occurs, often times it gets very hot. I have turned off location services and the like for most of my apps. I have wifi turned off when I leave my home. My Telco's service jumps from 3G to 4G depending on where I am in the city.
I am constantly seeing dramatic drops in battery availablity. The handset is still under the 1st year warranty, and I wondered if I went to an Apple store would they possubly replace it?
Thanks for any advice.
Cheers from Brisbane, Australia

This may not help at all but if you are using a third party charger this may be why the device gets hot and not keeping a charge but i would do a restore of the phone and then fallow gdgmacguys advice and take phone to an apple store also never use the phone when it is to hot this is a safty issue

Ingress software or iPhone issue over app crash and battery heating up

Hi all
As you know the ingress games requires you to keep the phone while moving around to recharge the XM, and of course that reduce dramatically the battery, so I do carry a battery pack or two.
Recently, when the phone is kept on for a few hours my iPhone 4s automatically shut down, or even crash the ingress app. and the phone heats up after kept on for over just over 3 hrs, and sometimes beyond this the phone shuts down.
Does anyone have this battery heating up issues or automatic shutting down after hours of keeping the phone on even connected to a battery pack?

While on the HOME screen double-press the Home button. The Quick Launch bar will appear on the bottom of the screen. Hold any icon until they all display "-", then tap the "-" on each one until they are all gone.
Next, reboot the phone by holding the HOME and SLEEP buttons until an Apple logo appears.
BTW, this assumes your phone is not jailbroken. If it is then that is your problem, and you will have to find solutions somewhere else, as it can't be discussed in an Apple-hosted forum.

Yellow Battery Heating up

Has anyone run into the Pearl battery heating up?
My has done it a couple of times where the whole device is heated up because of the battery, I take out the battery, put it back in a minute later, it cools down, but the charge has completely drained. Then everything works normal again.
It's only 6 months old.

I think you should resolve the issue quickly...otherwise this would damage your device.
tanzim
If your query is resolved then please click on “Accept as Solution”
Click on the LIKE on the bottom right if the post deserves credit

IQ826t Restart and Heating Issue

One thing I definitely do not like the HP's support especially when they will not allow us to buy a 7 Upgrade from Vista nor will they support something (even when I find their glitches and they admit after telling me it was just the OS).. On Repair work, I had to ship it out and this will be my 2-3 time to do repair on this PC in the past 3 years (and I have to wait a week for the repair to be done...)
Besides that, IQ826t, Win 7 Ultimate SP1
All Drivers are up to date with HP website (utilizing Win 7 64 bit drivers and Firmware is up to date). AVG update/scan (no issue - confirmed even rootkit).. Malwarebyte - Scan and no issue
Disk Cleanup, Disk Defragmentation done on a monthly and quarterly schedule
Biggest Issue:
I am getting a crash with Win 7 0x124 Stop Error Message (happens periodically and even after a reboot)
Never had this issue until May and the upgrade to Win 7 was done last year with SP1 update done on March (so it is not an issue with the OS as HP support personnel seems to think... I proved them the issue with Windows Update History, The Bluescreen error code on my error code reader).. This machine under warranty and I had issues with it constant (even in Vista)
They state that it is the OS.. Again, if that was the case, I would think it would happen right away like my Toshiba on SP1 upgrade... That was not the case in the matter. I have a firmware reset (default settings) and the issue persist..
The Error Code relates always HAL.dll or ntoskrnl.exe
One if hardware compatiblity and the other is an OS kernel exe file.. And this usually checking knowledge base relates to hardware failing due to 1) Compatibility (which HP website confirms is not the case) 2) OS corruption (which is not the case checking on safe mode and this happening STILL 3) Heat Issue (which I believe is the issue and was been documented on the Internet
What I am noticing is the unit is extremely HOT (vent is almost burning when it has been off and just turned on).. I wonder if the hardware pieces are literally melting to destruction since I can't just open it up (they state it will void my warranty)
The Symptoms before the Crash (happens any time.. Even right after a power up)
If you are playing audio or video, you will start to hear jitters and sound seems to echo itself .. Video would start to lag and become choppy.. Systems start to slow down and things seem to run very slow.. I have seen the power light on the PC start on but the touchscreen just go black (will not restart sometimes)..
Minor Issues (but could be related)
1) When running PC Hardware Diagnostic, they will come up with an error code in the past and that was warranted for a motherboard replacement (of course, they ship the box to the wrong location and I was in the middle of my wedding so I get to it now).. It was pertaining to PCI Express Status ICH9 PCI Express Root Port where it will generate an error code... Now, running the diagnostic... I will not get any error but PCI Express Root Port 3 & 5 do not show up on the diagnostic... Wouldn't that obvious show something that is a problem when there are 6 ports (which on the previous diagnostic that I can't grab past logs shows that). That is not warranted for a warranty work? Just a note, I got the fail test code (which was intermittent but keep happening and the tech support would not look at previous case.. Port 4 failed and a fatal device code)
2) Blu-Ray player will not run and their answer is that it is your Blu-Ray until they realize that I ran it on 3 different Blu-Ray player standalone, different Blu-Ray, and confirm DVD will work.. They still think it is a software issue until they can't deny my point when it will not read the Blu-Ray no matter what (they took control and confirmed it).. They believe the HP SmartDVD software was failing because of Win 7 and not Vista (even when I downgrade and confirm it works, I stated the software is the issue... Lone and behold, 2 months later they had an update that they refuse to admit I was RIGHT on the matter and done 15 hours of troubleshooting that they were wrong about)
3) Wireless Keyboard and Mouse lost connectivity even if the battery is not low... Just stop typing or omit letters.. This is considering the keyboard is literally in front of the touchscreen
4) Touchscreen is sensitive when it wants to be but won't in other... Constant issues there
This is why I have so much issue with support.. They seem to show that they will do anything to deny the issue.. Heck, I am a computer technian calling on the issue.. It ain't like I didn't troubleshoot on the matter... But they think we are all morons and when I prove them wrong, they will use any excuse to honor warranty... That is why it is amazing..

Look in your Settings > App Manager.
Tap Device Monitor.
Tap the Battery tab.
At the upper right, tap "Since Last Charge" to change to "Last 48 Hours".
What apps or processes are consuming the most battery power?
ALSO, in setting up your new Z30, are you syncing many contacts or calendar data from a connected email account?
Social accounts such as Facebook or Twitter?
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Do latest macbook pro's still have the heat issue? (7/10/06)

wondering if the latest revisions of macbook pro still have the heat issue.. i heard the issue of the fan going off/on causing that 'whine' is gone and now the last thing holding me back from making the 'switch' is this heat dealy.

My week 12 MBP has never had heat issues. It's fast, stable and comfortable to use.
The case bottom of my 5+ year old TiBook gets hotter than the MBP. I've used a tilt stand for PowerBooks for years, both to reduce heat and because I prefer the typing angle.
People are not getting burned. Really. If I were to charge a battery at the same time I'm running processes that load up both CPUs, the metal strip behind the function keys would get quite warm. It might be uncomfortable to touch (but doesn't have to be touched to use the computer). But it will not result in a physical burn, unless one loves discomfort enough to keep touching it for a protracted period. Even then, not a serious burn. A cup of coffee or tea is far more dangerous than a MacBook Pro.
I've encountered several hot-running MBPs owned by people that I know in my local area. In each case, the problem was caused by software that was loading up the processors at full blast. One case was a runaway process that was initiated by software that was incompatible with the Intel processors. Another was caused by a stalled startup item -- again, software incompatible with the Intel CPU. In both cases, Migration Assistant had been used and the applications had not been updated for Intel compatibility.
And still another case was a large collection of Widgets, some of which are badly written and load up the processors. Deactivating all but 3 or 4 Widgets made that computer run cool and quickly.
Complaints about heat on this forum dropped dramatically after the last firmware update.
If you want the most powerful notebook computer Apple has ever designed, get a MacBook Pro. I'm delighted with mine. No fix necessary, thank you.

Extreme Battery Heat (Zen Mic

Hi im new here any way, straight to the point i have a Zen Micro had this one for about 3 days (due to sending my old one back and receiving a replacement).
I charged it up over night, unpluged it the following morning and left it on my kitchen table came back after using the bathroom and the whole Zen Micro was really really hot, and when i tried to turn it on it wouldn't turn on, im using the latest firmware ..0.
I was wondering if any one else had this problem i have searched it in the forums and found one post which didn't help.
Also can any one suggest any thing?
Is it my Zen Micro or my battery?
Should i buy a new battery?Message Edited by coolz0uk2003 on 0-2-2005 02:06 AM

The problem might be caused by taking out the charging cable after it's been charge. What I noticed with the ..0 firmware is that the Micro turns on by itself when you plug it in or take it out. I'm not sure why it does that but I did noticed that my Micro freezes when I take out the cable after charging. It may or may not show any lights, I did noticed that mines was left on but it was feint. There was probably one time that it wasn't on. My Micro also got how since it was left on. The heat issue is probably coming from the LEDs from being on for too long. It's like how cellphones get hot after using them for a long time.
One day I change my firmware to the 2.20.05 one and I still see the Micro booting up whenever I plug it in or out but it doesn't freeze anymore. I really do think it's a firmware problem because I did notice it a lot with the ..0. I haven't noticed it with the old one, the one before ..0. Though I don't suggest you install 2.20.05 firmware just to test this out because you'll lose your MP3s during the format.
Pay close attention to your Micro after taking out the cable. See if it boots up or not. Then try turning it on and shutting it off to make sure that it doesn't happen again. If it does freeze, try plugging the cable back in. Also it doesn't matter if you are charging from USB or AC, it happens to both.
I know no one won't believe me on this issue because it's kind of rare for it to happen. A lot of people might think it is an hardware issue but I don't think it is.
Message Edited by Shinryuu on 0-2-2005 0:04 AM

Heating issue lenovo a6000 plus

What is the normal temperature of A6000 Plus ??

Hi,i have observed the same issue with my Lenovo A6000 Plus.I inserted memory card (7GB was full out of 8GB) loaded with images, songs, videos etc.Phone started heating up badly just like heater when i launch gallery app to check images & videos. but it failed to load images.Then i checked music app to play some sound tracks. i faced the same i.e. songs did not get fetch from SD card.I went in battery settings to check what application is consuming battery. i found that "Mediaserver" application is consuming battery above 70%. Same SD card i inserted in other phones like Motorola. there it works smoothly without any heating issue.I guess lenovo team should fix this problem because eventhough we insert formated SD card, one day it will get full and will face this problem in future too.

New External Battery/Sleep Issues

I have a weird one that I can't figure out. I have been using a new external battery for about a week (the old one wouldn't stay charged for more than an hour). Today my computer kept putting itself to sleep (sleep light flashing and nothing else working - not even power button) and not starting up again unless I unlugged it from the wall, took out the battery and then reset the PMU. I took out the new battery and put in my old one and so far so good. I wonder if it really is the new battery causing these issues or not. Any thoughts?

I'm having this same random sleep issue too!! It's been happening to me a little after I installed Leopard - but I'm not implying that Leopard is causing the issue. My PowerBook still has the original battery. The battery has not shown any indication that it refuses to accept a charge, nor is there any physical damage to the battery or the connectors.
*I have found an easy way to wake the computer when it does go into sleep.* I used to take out the battery, unplug the power cord if it was plugged in, press the power button and reset PRAM just as an added measure. But when you see it is starting to put itself to sleep, let it do its thing... don't try to stop it. When the white sleep light finally starts glowing, tap the space bar (probably any key will do) just ONCE. Sometime it will bring it back for a second and go right back to sleep mode, in which case I just repeat the steps above. Sometimes it'll last me a few minutes. If it does this repeatedly, then after pressing the space bar (after the sleep light starts glowing), I have noticed a delay in it waking up...I can press the space bar and it will either come back right away, or it may take like 30 seconds until it responds. Through trial and error, I've found that if I press any key more than once, I run the risk of it not coming out of sleep mode period....then I have to go through the whole reset process with the PRAM and all.
Hope maybe that helps someone
Has anyone kind of figured out what this could be the cause of? My laptop gets kind of hot sometimes, but it doesn't always force itself into sleep mode when its hot - so it may or may not be a over heating issue perhaps?

Have any heat issues been fixed in the new MBPs

I'm interseted in buying a new MBP. Does anyone know if any of the heat issues been fixed in the latest MBPs? And are the GPU's still underclocked?

Nicolas, I've got a week 12 MBP and have never considered it to have a heat problem.
Just made another 15 minute run of System Load with both CPUs at 100%. The CPU temp momentarily hit 78 C, then the fans kicked in (quietly) and the temperature stabilized at 73 C.
The current CPU temperature is 51 C, which is normal for routine writing, Web browsing and downloading to my database. When I'm doing database work that frequently but for only brief bursts pegs the CPUs, the temps run in the high 50s to low 60s C. On battery power, the temps drop several degrees C.
The computer remains comfortable to use at all times. Note: I use it on an aluminum tilt stand, whether on my desk or in my lap.
Haven't done the "grease fix" and don't plan to.

T61p heat issue.

Hi, tried to find a search button on here but i couldnt find one, point me to the correct thread if there is one. BUT...
My t61p burns up whenever i run any 3dprogram, the gpu shoots to ~80C. when i was on xp i could use the power manager to scale everything back and keep it under 75 but now that i am on windows7 this is not an option. It will often **bleep** off due to (what i assume is) heat issues. and wont restart til i unplug and do a battery pull. I use tpfanControl and the smart2 profile helps a little bit but not enough to be useful. I dust the laptop regularly, im all out of ideas. Ive heard that there was a fault batch of t61p's that came out, not sure if it was rumor or not.
Any help would be great, thanks.
-Crobo
Solved!
Go to Solution.

I had this problem before, here is what I did:
1. Disassemble the keyboard to expose the fan and memory. You need to dust off and use a blow dryer and air cleaner to blow the dust off the board and remove the fan and memory to clean everything surrounding it and more.
2. Clean the fan by blowing air cleaner (those use to clean the camera), You should get the idea that the dust around and inside the fan and on the system board is blocking air flow. Clean the memoery by remove and use a pencil eraser to clean the contacts.
3. Check your BIOS on CPU to run on automatic and balance mode. Do not force the CPU to run at full throttle at all time. Let the step technology manage it for you. I know you want to get your money worth on the CPU speed, but, the trade off is longevity of the system.
4. Maksure in the power management software configuration that you do not have CPU running at maximum performance at all time.
Good luck. BTW, I found the Windows 7 drivers and system management reduce the libility on the CPU and manage the resources well. Move to W7 will help because of it's system management.
Good luck!...

Bottom cover warped by battery heat

My MacBook is just over a year old and the bottom cover is warped from the battery heat from charging (pulled away from under the front center below the mouse pad), is this covered by Apple Care extended plan (cannot get any infromation online as site is down)? Love it overall, but the bottom plastic is cheap!

WAITTTTTTTTT! =)
I didn't realize that you were having the bad rubber bottom issue =) Apple is covering it.
I had the same issue with mine.
3 Options
bring to Apple store and they do it
bring to an Apple athorized repair and they do it
order the part for free and do it yourself
The link below has the place to order it if you want to do it yourself. Also has other info on it.
http://www.apple.com/support/macbook-bottomcase/

Battery heating

I have the original battery that came with the Thunderbolt. I noticed if I'm using mobile web for maybe over 20 minutes or so, I can feel the battery heating up. Is anyone else experiencing this with the original battery? Is this "normal"? I don't notice it heating up when I just text or use the phone for voice calls. It's past the 14d period when I can return the phone. My laptop was doing the same thing (heating up), until finally it "burned out" the inside and has had to be repaired several times. I'd HATE for the same thing tohappen to my Thunderbolt, especially since I have 2 years with it. (Footnote: I did not purchase the extended warranty.) Help!!!

Download from the market "Battery Monitor" application and it will show you much more information about battery including its temperature. Normailly working battery temperature (not during charging) range is from 80F (27C) and should not exceed 105F (40C). If your battery is getting hotter than 105F during normal operation, you are risking of damaging not just a battery but also internal components of the phone.

IPhone 4S Battery Life: Best solutions and procedures for 1st time user: 1-Do you have a battery life issue (learn first what the usage time spec is about) 2-What can you try to remedy the situation without reading 500 pages of posts

What follows is a grouping of some of the most fruitful procedures - from what I've seen in the biggest battery life issue thread - and some background information and discussion for solving or improving the battery life with the iPhone 4S and may be applicable also to devices on which iOS 5.0/5.0.1 has been applied. Credit goes to the respective users who contributed this information to the forum and they should be commended for doing so. This is not a final listing. The goal here is to provide a first stop sort of knowledge base document for newcomers instead of having them perusing the never ending threads where the wheel is reinvented on every page...
Please don't post your questions, usage screenshots, or claims that it worked or not for you or anything here except PROCEDURES/DEBUG STEPS/SOLUTIONS or improvements to the procedures already listed here. Try to use point form and to be as concise and clear as possible. Hope all this helps.
Thank you and good luck!
General info and specs
First, take a look Apple's battery tips, info and specs(obligatory reading for all Iphone 4S users - read it once and for all):
http://www.apple.com/batteries/iphone.html
http://www.apple.com/batteries/
... you didn't read it? loll Always remember this i.e. the definition of "usage":
Usage: Amount of time iPhone has been awake and in use since the last full charge. The phone is awake when you’re on a call, using email, listening to music, browsing the web, or sending and receiving text messages, or during certain background tasks such as auto-checking email.
I'm still not convinced you read the links so here's what Apple has to say in terms of fine tuning your battery life:
Optimize your settings
Depending on how they are configured, a few features may decrease your iPhone battery life. For example, the frequency with which you retrieve email and the number of email accounts you auto-check can both affect battery life. The tips below apply to an iPhone running iOS 5.0 or later and may help extend your battery life.
Minimize use of location services: Applications that actively use location services such as Maps may reduce battery life. To disable location services, go to Settings > General > Location Services or use location services only when needed.
Turn off push notifications: Some applications from the App Store use the Apple Push Notification service to alert you of new data. Applications that extensively rely on push notifications (such as instant messaging applications) may impact battery life. To disable push notifications, go to Settings > Notifications and set Notifications to Off. Note that this does not prevent new data from being received when the application is opened. Also, the Notifications setting will not be visible if you do not have any applications installed that support push notifications.
Fetch new data less frequently: Applications such as Mail can be set to fetch data wirelessly at specific intervals. The more frequently email or other data is fetched, the quicker your battery may drain. To fetch new data manually, from the Home screen choose Settings > Mail, Contacts, Calendars > Fetch New Data and tap Manually. To increase the fetch interval, go to Settings > Mail, Contacts, Calendars > Fetch New Data and tap Hourly. Note that this is a global setting and applies to all applications that do not support push services.
Turn off push mail: If you have a push mail account such as Yahoo! or Microsoft Exchange, turn off push when you don’t need it. Go to Settings > Mail, Contacts, Calendars > Fetch New Data and set Push to Off. Messages sent to your push email accounts will now be received on your phone based on the global Fetch setting rather than as they arrive.
Auto-check fewer email accounts: You can save power by checking fewer email accounts. This can be accomplished by turning off an email account or by deleting it. To turn off an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and set Account to Off. To remove an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and tap Delete Account.
Turn off Wi-Fi: If you rarely use Wi-Fi, you can turn it off to save power. Go to Settings > Wi-Fi and set Wi-Fi to Off. Note that if you frequently use your iPhone to browse the web, battery life may be improved by using Wi-Fi instead of cellular data networks.
Turn off Bluetooth: If you rarely use a Bluetooth headset or car kit, you can turn off Bluetooth to save power. Go to Settings > General > Bluetooth and set Bluetooth to Off.
Use Airplane Mode in low- or no-coverage areas: Because your iPhone always tries to maintain a connection with the cellular network, it may use more power in low- or no-coverage areas. Turning on Airplane Mode can increase battery life in these situations; however, you will be unable to make or receive calls. To turn on Airplane Mode, go to Settings and set Airplane Mode to On.
Adjust brightness: Dimming the screen is another way to extend battery life. Go to Settings > Brightness and drag the slider to the left to lower the default screen brightness. In addition, turning on Auto-Brightness allows the screen to adjust its brightness based on current lighting conditions. Go to Settings > Brightness and set Auto-Brightness to On.
Turn off EQ: Applying an equalizer setting to song playback on your iPhone can decrease battery life. To turn EQ off, go to Settings > iPod > EQ and tap Off. Note that if you’ve added EQ to songs directly in iTunes, you’ll need to set EQ on iPhone to Flat in order to have the same effect as Off because iPhone keeps your iTunes settings intact. Go to Settings > iPod > EQ and tap Flat.
Usage specs for the 4S - http://www.apple.com/iphone/specs.html:
Talk time: Up to 8 hours (12.5% per hour drain) on 3G, up to 14 hours (7.1% per hour drain) on 2G (GSM)
Standby time: Up to 200 hours (0.5% per hour drain)
Internet use: Up to 6 hours on 3G (16.6% per hour drain), up to 9 hours (11.1% per hour drain) on Wi-Fi
Video playback: Up to 10 hours (10% per hour drain)
Audio playback: Up to 40 hours (2.5% per hour drain)
So a scenario of normal usage could be for example: 4 heavy hours of 3G internet browsing (66.4%), with one hour of call on 3G (12.5%) and 22 hours of standby (11%) = 100%
A battery life issue is a problem where the drain is really out of spec either during usage or standby or both. For example, multi-% per minute drain during usage or a 10% drain per hour during standby is problematic. Browsing the internet on 3G during one hour and losing 16-17% is not.
Apple's test methodology for claiming the specs:
http://www.apple.com/iphone/battery.html
Procedures
davidch tips (reset+full discharge recharge):
Go through these steps to address the battery after updating to iOS 5.0.1:
1. Reset all settings (settings app-> general-> reset)
2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
3. Turn off system location services timezone and iAd
4. Fully discharge battery (tilll it shuts off with the spinning wheel)
5. Fully recharge battery (overnight if possible)
In my experience this improves the Standby battery drain issue significantly in most cases. It reduces drain from 2-4% or more per hr to 0.5% or less. It has worked for many, many users now. If it does not work after a few try's you may have a real battery or hardware issue and should contact Apple. Good Luck!
ram130's variant of davidch i.e. additional steps:
Now using davidch original steps and attaching the tweaks I made to get me more usage. As shown on page 29.
Go through these steps to address the battery after updating to iOS 5.0.1:
1. Reset all settings (settings app-> general-> reset)
2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)
3. Turn off system location services timezone and iAd
4. Fully discharge battery (till it shuts off with the spinning wheel)
5. Fully recharge battery (overnight if possible)
6. Disable Siri 'Raise To Speak' and REBOOT *( if possible use another camera to verify the                 infrared is off after the reboot).
7. Set emails, icloud and calendars to fetch. ** test. Mines on hourly.
8. If your in a no signal and your phone is saying "Searching..." even after 10mins, reboot while in that area and after 1-2min it should say "No Service". This mainly applies to Verizon customers and improve battery life in these areas.
9. *optional* Goto Settings > General > Network and you will see "Hotspot.." loading something, wait a few seconds and it should say "setup personal hotspot" then exit out.
* I notice a great improvement after disabling this and rebooting. This increased my "screen on" usage or at least helped it. Make the change.
** I have not tested push yet to narrow down the drain but I had this change on my phone. I believe exchange push is responsible for some stand by drain. As for icloud, haven't notice much of a difference. Just try it for a day. My email still came in fast most times. Again still testing, will report back on these..
buxbuster tips(wifi sync, iCloud):
These are my own tested workarounds that worked for my iPhone 4S and seemed to have worked for others as well :
Workaround number 1. Deselect wifi-sync in iTunes and press sync.
If that doesn't work try :
Workaround number 2 : Remove iCloud, reset network settings. ( I guess this won't work for you since you don't have it enabled ).
If both workarounds fail, you can always try to completely wipe your phone. That also solved some of the cases out there.
rolandomerida tips - i.e. buxbuster and additional steps:
Finally, I solved the syncing error loop. My contacts are syncing flawessly again between my devices and iCloud, and yes, the battery stopped draining, which is the main topic here.
I followed instructions from buxbuster (check his workaround a few pages up!) and an additional BIG step to restore contacts and syncing, as seen in a MacRumors forum.
This is what I did:
1. Make a backup of your Address Book, using the vCard option (or both, it doesn't hurt). Save it for later.
2. In your iPhone, delete iCloud account. When it asks, accept both: delete AND delete from my iPhone.
3. Reset network settings. The iPhone will restart, then will ask you to unlock the SIM card.
4.Turn Wi-Fi on.
5. Add the iCloud account again.
That's for Buxbuster's workaround. For some, it might work just like that. My iPhone repopulated from iCloud after step 5, but I still had that "server error" on iCloud. I had to do some extra steps, since my Mac was not syncing to iCloud and couldn't edit anything on my Mac or iCloud. Syncing back had to be fixed, too. If not, the syncing loop would continue from my iPhone, and the battery would drain awfully again.
1. In System Preferences -> iCloud, I turned Contacts off. I chose "keep on My Mac" those contacts, but I got an empty Address Book after a while. And a few minutes later, iCloud contacts were empty and my iPhone also. It is scary at first! Now, before importing that vCard backup...
2. Turn Wi-Fi off. This is important, since your contact-empty iCloud will attempt to wipe your Address Book from your Mac in seconds after importing.
3. Import your vCard backup to Address Book. Just drag it to your blank Address Book window; it asks if you want to import "x" number of cards. Of course, say yes.
4. Turn Wi-Fi on, and then iCloud contacts on again (System Preferences -> iCloud). It will offer to merge your newly populated Address Book with iCloud (which is empty at this point). It should upload every single contact to iCloud, and then to your iDevices. If not, a fifth step would be to import the vCard file to iCloud, but it shouldn't be necessary.
So, with iCloud syncing working correctly, there is no battery draining! Again, that was my particular issue.
I can't tell if this is the single answer to the widely spread battery draining problem, but it sure can be fixed with these workarounds, and yes, Apple should address the problem with a future update, for we affected customers don't need workarounds in the first place
This is the MacRumors discussion:
http://forums.macrumors.com/showthread.php?t=1256807
And dont' forget to check buxbuster's fix, video, and THANK him!
Miless tips (full 800mb release of 5.0.1 and sanitizing a restore):
As for 4S battery life. Try doing this,
1. Settings>Location Service ... disable all location services you do not need. In particularly Facebook because it drains the battery a lot.
Scroll down to the bottom at Settings>Location services>System Services ... Disable Setting Time zone, location based iAds, Diagnostic & Usage.
2. Settings>Notification>Calendar ... turn off the Notification Centre.
3. Settings>General>Reset ... do Reset All Settings. Doing this will not wipe out your iPhone. It will just Reset the network settings, location warning, keyboard dictionary, etc... but it will clear up some corrupted data there. Generally this will help.
Try these 3 steps first... if it still drains a lot, try the following,
4. Drain your battery down to 1%. Then charge it up using USB from PC ... not the charger. The charger output 1.0 A ( x 5V from USB ... you get 5W power). From PC, output is only 0.5A x 5V = 2.5W power. Charging is slower but trickle charge 4S helps the battery retain its charge better. I think it takes about 3-3.5 hours to charge full from USB/PC compared to slightly below 2 hours using iPhone charger.
If after doing the above still could not solve your battery issues (mine with iOS 5.0 was ok up to step 4, but not iOS 5.0.1).... plug you iPhone to a charger (any charger), from iPhone, access your iCloud ... set it up if you havent. Back up your iPhone data to iCloud. if you do not have enough storage (only 5GB is free), go to details and select the apps you need its data backup, choose only those you really need and leave those unnecessary ones out. Back up your camera roll to your PC/Mac manually as it could be too big to backup to iCloud.... once you have it setup, make sure you are on Wifi ... tap backup to iCloud from your iPhone. It will take a while if the file is huge.
Once backup to iCloud is completed, plug your iPhone to PC/Mac and launch iTunes 10.5.1 (make sure you have 10.5.1)
Click Restore. It will automatically initiate a download of iOS 5.0.1 ipsw for iPhone 4S. Wait for the whole process to finish, ie. download, restore software/firmware.
Once its done, do not set up your iPhone from iTunes. Set it up on your iPhone. Go through the selection. When prompted, select restore from iCloud (from your iphone backup earlier). Keep your iphone plugged into iTunes while restoring backup from iCloud. Because while restoring from iClouds, some data will be synced from iTunes if you plug in, e.g. music, video, etc... unless you bought these content from iTunes store. Apps will be downloaded from App Store from the cloud.
Once it's all done restored. Turn off your iPhone,.. and turn it on again.
Now, hopefully your battery wont be draining so fast anymore. Usually it wont after this. But you need to charge your battery at least 4-5 cycles to stabilize the charge on the battery. I dont know why... but battery life seems to get better and better for me after a few charge cycles after all the above work.
Good luck. Let us know if it works for you.
W. Raider tips (Sirii):
Bottom line for me of things that helped battery life are:
1. Turing off Siri and Rebooting the phone by holding the Home button and Top button down, ignoring the slider, until the phone shut down. (turn off Siri, reboot, and check top front of iPhone 4S against a lesser camera like the front-facing camera on an iPad2 - making sure the IR sensor is off)
2. Fully draining the battery, meaning using the phone until it shuts itself off from a drained battery and then recharging it to 100% about 4, maybe 5 times. I charged it both with a Mac and a wall charger.
Hope this is helpful!
Comments
jmm514 remarks (Twitter):
I may have found something. I had Twitter disabled in my notifications, but got a tweet today that popped up on my home screen. Didn't know I had this enabled. At the bottom of the Twitter notification settings is the home scrren toggle. Since disabling this, battery life seems better. Considering there is no setting for frequency of checking for tweets, it appears the phone is continually connecting to wifi to check for new tweets.
tmksnyder comments (notifications, corrupt data in iCloud):
For me, I found my iphone on wifi mysteriously connecting to my mac. I eventually narrowed it down to the Apple Move Trailers app which keeps a file in iCloud. The phone was trying to sync the file with the mac in the background even when the Movie Trailers app was closed (hitting the red x). Based on my macosx logs the iCloud process that was trying to sync was working directly between the phone and the mac without using itunes by connecting to an https address hosted on the phone. It was connecting every 3 minutes and failing (while phone was awake or awake during during a notification). I also found that iCloud control panel on OSX would error if I tried to delete the file. I fixed it by removing the App and doing a hard reset which stopped the sync. I probably could have turned off iCloud document sync in the phone but didn't think of that. My battery life has greatly improved while at home on wifi.    I am now at 28 hrs standby, 2 hrs 20 minutes of usage, and 68% battery. It was ok before where I could get 20-30 hrs standby and 6 -8 hrs usage. My usage today was phone calls, 3g surfing, and music via bluetooth in the car.
I also found even with Itunes iMatch, if I mass updated tages, art work etc, it would hit the phone on wifi even in standby. I was amazed.   Granted if I am not doing updates, Match won't hot the phone so this was a once in awhile event. I could drop my percentage by 5-10% in a matter of minutes when doing updates.   I think a lot of our problems are background processes, associated with iCloud, notification, and apps. More features means more battery.   I think the key thing is to keep track of what has recently been added or changed if battery life gets worse all of a sudden.   It may be an app that was recently installed and if possible you may want to completely remove it and not just quit it.
With twitter, i think it uses push notifications so it doesn't need to be running and actively poll on the phone. For instance , if i quit the mail app, i still will get mail notifications and can swipe the message and load mail. Apple Push Notifications servics maintain the connection to the phone and there are likely pings or connection checks that occur for the service on an os level not an app level. This minimizes the load so there arent a bunch of apps all runing and constantly checking. The notification service , if it is contacted from twitter or another service with data, will check the settings you have registered to the with the apple push service and send the notification to your phone. No matter what, there is a drain with notifications. M hunch is once one application is configured to receive notifications, connection checking occurs betwen the push service and the phone so it knows where it is on the network. If it is implemented correctly, these checks arent frequent if you are still and more frequent as you move. The other drain is for when the noification hits and is processsed. If i get 9 emails over night, my screen just popped up for 20 seconds or so to process each message using battery. I would even think that just go from low power to turning n the screen uses more juice than if the device was already on and i get the message. On nights I get no notifications, I see a 3 or 4 percent drop. On nights with a number of notifications, i have seen up to a 10 percent drop. Besides notifications, wifi sync and icloud will poll on the local network and use up battery if the host computer is on and running itunes or trying to sync a data file that is corrupt (which i had with the apple movie trailers app causing my phone to drain). For me turning off wifi sync and remving a corrupt file in icloud solved my battery issues and I get over 24 hrs of standby with 6 to 9 hrs of use and this is with all the normal location services and push serivices turned on.
See http://developer.apple.com/library/mac/ipad/#documentation/NetworkingInternet/Co nceptual/RemoteNotificationsPG/ApplePushService/ApplePushService.html for more info. I think it has a good overview of how the notifications work.

Well seems like that rumor of iOS 5.0.1 is finally gone the way of the dogs since developers got a beta of 5.1. So as stated earlier in the master discussion-> I suspect if you are filling up this thread with false post or creating a master set of links to various post that are unreliable you are wasting your time. Press is not going to touch the story due to poor or inaccurate sources which may be links from the master thread. This can include inaccurate information, combination of conflicting post or postings from users which may not own the device. Reputable press organizations have policies that require discloser and strict rules about what is a reliable source for a story. It is clear that many of the post in the master thread, which are links presented here are questionable.
Sorry to say that postings taken without any analysis of their totality have been propagated via various sites, for example sites such as http://www.2012federalbudget(dot)com. (Do not visit but I suspect that this is not the 2012 federal-budget site you would expect based on analysis of the records. There are plenty of sites like http://www.2012federalbudget(dot)com propagating questionable post in these threads.) One site for example in the discussion thread used a self signed certificate, the site had a log in to allow users to enter their OpenID. Seems many of these sites are pop and drop drupel configurations.
So remember this is how the really bad rumor of iOS 5.0.2 got started, the 5.1 memory leak issue, iCloud Issues, call quality, address book, etc.
Some of the postings have been very comical, I think the latest now is a dropbox issue. Seems that the length of the previous thread has resulted in various app engines of some proxy servers/tools reaching their limits.
So I would make sure to know the source of any information you link to. Make sure you avoid entering any information to outside links such as OpenID or Apple ID, these are big prize items for anyone with malicious intent. If you have issues and are a valid user contact APPLE CARE. (Note link is using McAfee Secure Short URL Service, and is https.)
http://mcaf.ee/ricdt
The original solution still represents a high level of success for users having any battery issues.
Install 5.0.1 on your iPhone 4s. Some users posting they are still using older versions, bad fake serial numbers, etc.
Make sure your device can run iOS 5.0.1 and is not altered.
Make sure you use a new Sim, not some cut down version which many users admit to doing. (Again, worth confirming what people are posting.)
Reset the device doing a hard reset and software reset.
Let battery drain and then charge for the full cycle, which is 24 hours.
I think you will find you will get the battery usage that APPLE has stated for the device.
Best of luck, stay safe and thanks

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