Optimal settings to save iPhone battery life

So, I followed all of Apple's suggestions to help preserve battery life but after the latest upgrade I can only use my phone for about 5 to 6 hours. Before, I got around 8 to 10 hours of usage and back then I was able to fetch and push information when it arrived. What to do now?
Thanks,
Loretta

recalibrate the battery - let the battery draiin to where the phone shuts off and then fully charge it without using it.

Similar Messages

Optimizing iPhone battery life: Between charges and before replacement

FYI. An excellent iPhone battery care article by iPhoneAtlas.com:
Optimizing iPhone battery life: Between charges and before replacement
http://www.iphoneatlas.com/2007/07/09/optimizing-iphone-battery-life-between-cha rges-and-before-replacement/

OK, I agree that is a completely false statement. The rest of the article is pretty good.
If you assume a linear decrease in battery charge for each full cycle (which it really isn't, but much easier to model in a spreadsheet). Then 80% of original charge after 400 full cycles is approximately 0.8% loss in battery charge per full charge cycle (again this is a simplification, stay with me). This means that after 400 cycles, you are at approximately 80% of your original total charge level. As stated by Apple.
So, extrapolating that out to EOL (end of life) which Apple assumes to be 50% battery charge, it would take approximately 1,000 full charge cycles for your battery to be EOL (according to Apple). It would actually be slightly less than that since it won't be a linear function.
For me, that's 2 to 4 years of use depending on whether or not I continue using the iPhone as much as I have this first full week.

Fix for iPhone Battery Life

Hi, I have done this with IOS 5 through 6 and it works.
I have done this serveral times with my phone, as battery life decreases. I have not figured out what is the original cause of my battery problems, but every now and again, something starts to dain my battery at a rappid rate, in an hour or two. This is the fix to reset it.
1 - Back up you phone to iTunes
2 - Go into the settings under General and at the bottom sellect Reset and reset your iPhone erassing all data.
3 - Once it resets and shows you the default "out of the box" screan, power it off
4 - Recharge it FULLY.... I leave it over night.
5 - Power it on again
6 - Restore your settings via iTunes.
7 - Your done
In my experiance, if you skip any of the steps, like not powering off when your recharge or not recharging fully, will result in it still draining quickly.
Hope this works for you.

Thanks JJT2122 !
I added your fix to the list of available fixes that improve iPhone battery life
A better iPhone 4s battery life

Iphone Battery Life on IOS 7.1

My battery life seems to have gone south since my upgrade to IOS 7.1. Does anyone know what I can do to stop the rapid drain? Can't even go a full day with avg use since the upgrade.

Hello Fatboy1351,
I certainly understand the importance of having the longest battery life possible on the iPhone. I recommend reviewing the following resource for some information about extending your battery life:
Battery & power
Is your iPhone battery draining too quickly or not holding a charge? Try restarting it first. You can also adjust several settings to extend the battery life of your iPhone.
iPhone Battery & Power
http://www.apple.com/support/iphone/repair/battery-power/
Thank you for using Apple Support Communities.
Best,
Sheila M.

Maximizing iPhone Battery Life

Regard maximizing iPhone Battery Life, just for my curiosity and knowledge, from a software or hardware standpoint why when we use the iPhone to access data, a Wi-Fi connection uses less power than a cellular network — so keep Wi-Fi on at all times.
Thank You

Your problem is the same for thousands after iOS update, but Apple does not manifest itself with respect to a possible fix.
My battery works only 2 hours of use.
And detail: with ALL the possible functions of the disabled device.
=/

What can I do to save my battery life with the new ios 7.3 update

I Loved the ios 7.3 update. My battery lasted for the whole day and I use my phone a lot. I did the ios 7.3 update yesterday and my battery life is horrible. With 2 hours into my day today I was down to 80% battery and I hardly used my phone at all. I love my iphone, but this update was a horrible mistake for Apple!

Thank God that I am not the only one who lost battery life in 7.0.3.
I haven't changed settings from 7.0.0 to now. So I am not going to change settings. With that said my brightness is always at about half or lower, depending on the ambient light. Bluetooth is always off. LTE has always been on since I bought the 5 last year. Wifi stays on, connected or not. So with all these settings as they are, there has been a huge difference in battery life from 7.0.2 to 7.0.3.
I could swear that I went from 100% to 83% charge while I slept for 7 hours. ***??? Really?
I'll test it out again tonight.
I am at work and I turned off LTE for s&g. And still saw 5% drop in 40 minutes with a 2 or 3 minute use.
KOT

HT4623 help with iOS7 how do you kill the programs that you visit on your phone to save the battery life?

how to kill programs with IOS7 that you visit on your iphone to save the battery?

Double tap Home button, swipe the app UP to delete from multitask-list.

Ideal Settings for 7 hour Battery Life

I just wanted to know what the ideal settings would be for a 15" MBP Mid 2009 Unibody to reach the 7 hour battery life as advertised.

Apple states that the Better Battery Life setting was used, and +"The wireless productivity test measures battery life by wirelessly browsing various websites and editing text in a word processing document with display brightness set to 50%."+
You can bet that the 'various websites' chosen were simple ones (no Flash animation, etc.). Also, 'editing text in a word processing document' with the autosave feature turned off will allow the HDD to spin down, saving power.
So, what you'd need to do to get 7 hours on battery is set the brightness to 50% or less and do only +really simple+ tasks on your MBP. IMO, the 7 hr estimate isn't 'real world', it's marketing.

When will you fix battery issues on ios 5.1.1? I have the same settings but 85% less battery life!!!

I have read many tips about what to do for increasing battery life. However
I hav the same setting with ios 5.1.1 that I was using with the previous
version (ios 5.1) but with 85% less battery life time. It is so frustrating because this
issue come back every 2 update : one killing your battery and the second
to fix this, and it starts again... I am really sick of this.
I am using an iPhone 4.

Hi All – I have also experienced the battery drain issue on upgrade to 5.1.1.
Like many on the forum I have tried ALL suggestions to resolve this issue, none of them have resolved the problem that Apple owners seem to be experiencing, it’s not in our minds as some suggest. My iPhone 4 and iPhone 3GS are working a treat under 5.1.1, in fact I believe the 3GS is running better than under 4.3.x.
However I do think I have tracked the problem down, which I will document here, but first a list of the things I’ve tried:
- Fully discharge battery to <5% and then back to 100% and leave charging for 3 hours after
- Turn off all notifications
- Turn off all location services
- Turn down brightness
- Turn off ALL iCloud services (effectively delete the account)
- Reconfigure email account to ‘MANUAL Fetch’ only
- Factory restore to fresh 5.1.1 from within iTunes and then restore from back-up
The only thing that stops the battery discharging at around 5% every 8 hours is turning off Wi-Fi during standby mode. Prior to 5.1.1 the iPad would drain maybe 1% every 24 hours in standby mode with Wi-Fi on.
Puzzled by this I did some research to understand what the iPad is doing whilst in standby mode with Wi-Fi on, so below is a trace from the iPad system log so that hopefully someone can look at this , identify the issue and hopefully fix it in a future ios 5.1.x release:
3 Jun 2012 12:02:43 - CommCenter [56] (Notice): Telling CSI to go low power.
3 Jun 2012 12:02:43 - kernel [0] (Debug): virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 0 swapBusy: 0 fController: 0 -> 0
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::powerStateWillChangeToGated(): cap 0x18000, stateNum 0, dev 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::powerOffSystem() : Powering Off and sleeping
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::powerOff(): fStateFlags(34a22)
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Unicast IP filter enabled
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled WOMP filter 0 (ID=103)
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled WOMP filter 1 (ID=104)
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled the '!ICMP' packet filter
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLAN Sleeping on BSS: @ 0xc0e90800, BSSID = 4c:17:eb:55:b6:eb, rssi = -57, rate = 54 (100%), channel = 11, encryption = 0x8, ap = 1, failures = 0, age = 34, ssid[ 9] = "SKY67278"
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::powerOff(): Associated & WoW enabled, WiFi will remain up
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANBusInterfaceSdio::powerOff(): fStateFlags(0000002f)
3 Jun 2012 12:02:43 - kernel [0] (Debug): AppleBCMWLANCore::powerStateDidChangeToGated(): stateNum 0, pol 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:02:43 - kernel [0] (Debug): (null)
3 Jun 2012 12:02:09 - CommCenter [56] (Notice): Telling CSI to exit low power.
3 Jun 2012 12:02:09 - kernel [0] (Debug): pmu wake events: wlan
3 Jun 2012 12:02:09 - kernel [0] (Debug): virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 1 swapBusy: 0 fController: 0 -> 0
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::powerStateWillChangeToGated(): cap 0x8002, stateNum 1, dev 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::powerStateDidChangeToGated(): stateNum 1, pol 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::powerOnSystem() : Powering On
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::powerOn(): stateFlags(24a23)
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANBusInterfaceSdio::powerOn()
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::powerOn(): Tearing down WoW mode
3 Jun 2012 12:02:09 - kernel [0] (Debug): [9395.720807416]: AppleBCMWLANCore::systemWokenByWiFi(): Wake reason = wlan
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::handleDataPacket(): Wake up packet received: Data
3 Jun 2012 12:02:09 - kernel [0] (Debug): Wakeup Packet: 40500428A49D4C18EB55B6DA08004500004e000040004011b948c0a80001c0a80005d3880089003 a67ef03e90000000100000000000020434b414141414141414141414141414141414141414141414 1414141414141410000210001 (92 bytes)
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLAN Woke on same BSS: @ 0xc0e90800, BSSID = 4c:17:eb:55:b6:eb, rssi = -60, rate = 54 (100%), channel = 11, encryption = 0x8, ap = 1, failures = 0, age = 34, ssid[ 9] = "SKY67278"
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled the '!ICMP' packet filter
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled the '!ICMP' packet filter
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled packet filters
3 Jun 2012 12:02:09 - kernel [0] (Debug): en0: BSSID changed to 4c:17:eb:55:b6:eb
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleD1946PMUPowerSource: AppleUSBCableDetect 0
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleD1946PMUPowerSource: AppleUSBCableType Detached
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:02:09 - kernel [0] (Debug): AppleBaseband::resetDetectInterrupt with 0
3 Jun 2012 12:01:58 - CommCenter [56] (Notice): Telling CSI to go low power.
3 Jun 2012 12:01:58 - kernel [0] (Debug): virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 0 swapBusy: 0 fController: 0 -> 0
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::powerStateWillChangeToGated(): cap 0x18000, stateNum 0, dev 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::powerOffSystem() : Powering Off and sleeping
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::powerOff(): fStateFlags(34a22)
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Unicast IP filter enabled
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled WOMP filter 0 (ID=103)
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled WOMP filter 1 (ID=104)
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedEntry(): Enabled the '!ICMP' packet filter
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLAN Sleeping on BSS: @ 0xc0e90800, BSSID = 4c:17:eb:55:b6:eb, rssi = -59, rate = 54 (100%), channel = 11, encryption = 0x8, ap = 1, failures = 0, age = 34, ssid[ 9] = "SKY67278"
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::powerOff(): Associated & WoW enabled, WiFi will remain up
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANBusInterfaceSdio::powerOff(): fStateFlags(0000002f)
3 Jun 2012 12:01:58 - kernel [0] (Debug): AppleBCMWLANCore::powerStateDidChangeToGated(): stateNum 0, pol 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:01:58 - kernel [0] (Debug): (null)
3 Jun 2012 12:01:24 - CommCenter [56] (Notice): Telling CSI to exit low power.
3 Jun 2012 12:01:24 - kernel [0] (Debug): pmu wake events: wlan
3 Jun 2012 12:01:24 - kernel [0] (Debug): virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 1 swapBusy: 0 fController: 0 -> 0
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::powerStateWillChangeToGated(): cap 0x8002, stateNum 1, dev 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::powerStateDidChangeToGated(): stateNum 1, pol 0xc0a6a800 (this 1, provider 0)
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::powerOnSystem() : Powering On
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::powerOn(): stateFlags(24a23)
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANBusInterfaceSdio::powerOn()
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::powerOn(): Tearing down WoW mode
3 Jun 2012 12:01:24 - kernel [0] (Debug): [9360.861496125]: AppleBCMWLANCore::systemWokenByWiFi(): Wake reason = wlan
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::handleDataPacket(): Wake up packet received: Data
3 Jun 2012 12:01:24 - kernel [0] (Debug): Wakeup Packet: 40500428A49D4C18EB55B6DA08004500004e000040004011b948c0a80001c0a80005a9a50089003 a91d203e90000000100000000000020434b414141414141414141414141414141414141414141414 1414141414141410000210001 (92 bytes)
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLAN Woke on same BSS: @ 0xc0e90800, BSSID = 4c:17:eb:55:b6:eb, rssi = -61, rate = 54 (100%), channel = 11, encryption = 0x8, ap = 1, failures = 0, age = 34, ssid[ 9] = "SKY67278"
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled the '!ICMP' packet filter
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled the '!ICMP' packet filter
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBCMWLANCore::configureWoWAssociatedExit(): Disabled packet filters
3 Jun 2012 12:01:24 - kernel [0] (Debug): en0: BSSID changed to 4c:17:eb:55:b6:eb
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleD1946PMUPowerSource: AppleUSBCableDetect 0
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleD1946PMUPowerSource: AppleUSBCableType Detached
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleSynopsysOTGDevice::handleUSBCableDisconnect
3 Jun 2012 12:01:24 - kernel [0] (Debug): AppleBaseband::resetDetectInterrupt with 0
These repeating messages appear approx every 30 seconds the wakeup packet contains the MAC addresses for my router and iPad, so one of them is misbehaving. This may be to do with how these have been implemented:
http://en.wikipedia.org/wiki/Wake-on-LAN
http://en.wikipedia.org/wiki/Sleep_Proxy_Service
Either way I believe this is the source of the power drain issue whilst in standby with Wi-Fi turned on, perhaps this could be a router issue and that is why the issue not hitting everyone post 5.1.1?
All the best.

Iphone battery life after 1.11 upgrade

I noticed that suddenly after applying the 1.11 upgrade, the battery life in my iphone dropped by at least 50%. Has anybody else experienced this and is there a solution??

I have actually seen an increase in my battery life. Before I used to get a max of 4 and a half hours (with update 1.0.2). As of now, I have got a max of 8 hours and 32 minutes usage with 1 day and 12 hours of standby. My average is 6 hours of usage with 2 days of standby with Update 1.1.1.
Try to drain your battery completely (Until your phone shuts down and the Connect to plug icon is shown with the red sliver on the battery). Then connect to your wall charger and do a complete recharge. This might help your battery indicater to recalibrate.

How do I disable a unused application at the bottom of the screen on the IOs7to save on battery life.

How do I disable a unused application at the bottom the screen on a 4s using i0s7.0 software to save on battery power.

Double Tap the Home Button... Then swipe the App Upwards.
From here > Force the app to close

Having trouble with iphone battery life ?

I bought the phone via applestore.com was delivered to my singapore address. The phone battery life is minimal does not hold for more than few hours and am anbale to reset or install any softwares as per battery life. If you could kindly direct as to wehre i can take the phone is singapore to claim warranty as am having trouble contatctin the apple support numbers.
Thanks
Munshid

No, no trouble really. Although I am the third owner of this 3gs, I find the battery pretty hard to kill. I think all you people with lag and battery drain problems have one or more rogue processes running. Maybe one of the various system info apps from the app store could reveal if this is the case.
Otherwise, try a restore or a restore as new.

How is your iPhone battery Life holding up with the Watch paired ?

I haven't received my watch yet, But my wife got her watch and says her phone died much faster today. Its understandable since the pull on the battery is greater with Bluetooth on all day. Just curious to see what the community is experiencing.

me too.
And last night, Im the only one did not check phone all the time among my friends.
My life is back

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

Save and Protect your iPad Device: How to Save and Prolong the battery life of your new ipad

Please, as you read add more answers to this on how to prolong and save your ipad battery life. Thank you
Saving the battery life of your iPad
1.Keep Your iDevice Out of the Sun
Whatever you do, don’t leave your iPhone or iPod sitting in a hot car—heat kills batteries faster than any other factor, and your device that used to keep a charge for hours will eventually barely hold a charge, and you’ll have to pay Apple to get it replaced. The same thing holds true for any really hot environment: try and store your device in a cool place.
Reduce the Screen Brightness
If you keep the screen at maximum brightness all the time, you’re wasting a lot of battery life—and the screens these days are so bright anyway that you don’t really need to, especially at night. Head into Settings -> Brightness & Wallpaper to adjust the default level of brightness, which you can probably keep as low as 30% most of the time.
2. Make Sure the Screen Locks Quickly
Even if you’ve adjusted the screen brightness, there’s still no substitute for having it turn off quickly when you’re not using it. Head into General -> Auto-Lock to set the screen lock to happen as quickly as your device will let you. This makes a big difference if you are always picking up your phone and putting it back into your pocket without turning the display off.
3. Use Airplane Mode When You Don’t Need Internet (iPad/iPhone)
If you’re busy spending the next 8 hours playing Angry Birds, there might not be a good reason to have internet access, so you can consider using Airplane Mode, which turns off both Wi-Fi and the regular wireless radio. Of course, this will prevent phone calls if you’re on an iPhone—but if you’re busy with Angry Birds you probably don’t want the interruption anyway.
4. The more important reason to use Airplane Mode is when you’re mobile in an area with a really spotty connection—because the iPhone or iPad will try to stay connected at all times, it’s going to be constantly searching for a connection, which can drain your battery. Head into Settings and flip the Airplane Mode switch right up at the top of the screen.
Use Wi-Fi Instead of 3G if Possible
According to Apple, the iPad will get 10 hours of battery life under regular use with Wi-Fi enabled, but will only get 9 hours using 3G—the iPhone gets 6 for 3G and 10 for Wi-Fi. Of course, if you’re heavily using the Wi-Fi, you’ll still be draining the battery—the point is under similar workloads, Wi-Fi is better than 3G for battery life.
You can enable Wi-Fi under Settings -> Wi-Fi, and then pick the network you’d like to connect to.
5. Reduce or Eliminate Mail & Calendar Checking
If you’ve got a bunch of email, calendar, or contact accounts configured, and they are all being checked and downloading email on a regular basis, you’ll be draining the battery an awful lot faster than you need to.
Head into Settings -> Mail, Contacts, Calendars -> Fetch New Data and change the setting to the least frequent check possible. If you don’t use it often, you can just turn Push off entirely and then manually check when you need to.
6. Reduce or Eliminate Push Notifications
Do you really need notifications from Twitter or whatever other apps you’re running? You can turn these off one-by-one, or turn off Push entirely by heading into Settings -> Notifications, and save a bit of extra battery life since your device won’t be pulling in data for those applications anymore.
7. Reduce or Eliminate System Sounds
This one is probably a little silly, but if you really don’t care for the system sounds you can save a small amount of battery life by removing the sounds. A very, very small amount, most likely. Head into Settings -> General -> Sounds to change them.
8. Disable Location Services
If you don’t really need the location services, you can disable them to save some battery life. Head into Settings -> General and flip the Location Services setting to off.
9. Disable Bluetooth If You Don’t Need It
If you don’t use a Bluetooth headset or keyboard, you should keep the Bluetooth radio disabled to save some extra battery life. Head into Settings -> General -> Bluetooth to flip it on or off.
10. Disable Vibrate Feature in Games
If you’ve got a game that uses the vibrate feature, you can turn that off to save some battery life. This mostly matters if the game heavily uses it, and you’ll need to change the setting for the game. As a side note, and it should go without saying, if you’re running really intensive video games, they will kill your battery very quickly.
11. Charge and Discharge Your Battery Regularly
Your iDevice needs to be fully discharged and recharged at least once a month to operate at maximum efficiency and keep the battery from dying. You’ll also want to make sure that you don’t store the device with a dead battery, as that can also cause the battery to lose charge capability—when your battery dies, make sure to recharge it quickly.
<Edited by Host>
Irem Bright writes and would love your own addition if you got other helpful tips.
Thank you all.

11. Charge and Discharge Your Battery Regularly
Your iDevice needs to be fully discharged and recharged at least once a month to operate at maximum efficiency and keep the battery from dying. You’ll also want to make sure that you don’t store the device with a dead battery, as that can also cause the battery to lose charge capability—when your battery dies, make sure to recharge itquickly
The reason that Apple suggests you drain and recharge your battery once a month is not because it affects the life ofthe battery. What it actually does is calibrate the battery sensor, giving you a more accurate reading.
Other than that, you done an admirable job of summarizing the Knowledge Base article:
http://www.apple.com/batteries/ipad.html
Best of luck.

Optimal settings to save iPhone battery life

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