6.1.2 battery life still awful if I use my phone
After the 6.1.2 update battery life a little better with phone on standby. But if I dare to 'use' the phone for calls or apps I still can watch the
The battery life drop. By the minute. What good is this? How is this going to be fixed?
All I can say in this Apple forum is that downgrading the iOS is not supported by Apple.
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem, make an appointment at the Genius Bar of an Apple store
Apple Retail Store - Genius Bar
Similar Messages
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My iPhone with 40 or so percent randomly shuts down with iOS 7 and 6. Often with the camera app stating the phone is out of battery. Moments later I turn it back on and the same battery life still appears. It sometimes happens over and over until I leave it alone for a while (still not charging), and then it works.
I think you might get a new phone instead of repairing it as it takes time and you said the repairing center is far from your living place
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I just bought my first iphone. I am so disappointed in the battery life of the iphone 5. Is this the norm for iphones? Are they working on a fix to this problem? Almost wishing I had bought something else.
Without knowing what battery life you are seeing we can't determine if you have a problem. Have you compared your usage to the Technical Specifications?
Talk time: Up to 8 hours on 3G
Standby time: Up to 225 hours
Internet use: Up to 8 hours on 3G, up to 8 hours on LTE, up to 10 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 40 hours
Under normal use, unless there's a problem with your phone, battery life is comparable to any other smart phone and better than some. If you've never owned a smart phone before you will be disappointed with the battery life on all smart phones. You should expect to charge any of them daily. It's a mistake to think of it as a phone at all; it's a very powerful pocket-sized computer that can also make phone calls. -
IPod Touch 4G Battery Life Is Awful on v4.3.2
Hi there, I own a iPod Touch 4G on v4.3.2 & the battery life on it is awful & decreases way too fast. Please do something about it please, Apple. Maybe release a new update to under-clock the device..? I don't know, something to increase the battery life.
I'm pretty sure it never used to decrease this fast.. I've just been keeping it up-to-date like I'm supposed to.. and now I can't even listen to the music while browsing the web without the battery life being eaten up.. even with the brightness on lowest setting.
I've tried restoring completely & also draining & recharging the battery.. Makes no difference, really.
I'm aware that there are others that also have this problem so get it sorted please, Apple. I came here to post this because for me & other iPod Touch 4G owners, this is a serious issue. The issue effects our daily use & experience of the product.
I am very upset about the battery life being so low..You are not addressing Apple in this forum. If you want to inform Apple of yur displeasure go here:
Apple - iPod touch - Feedback -
Iphone 5 shuts down when battery life still shows 10% left
Install iOS7 on iphone 5 and the device will power down sometimes when it still shows 10-20% battery life then not power back on, while displaying that it should be plugged in. Also the phone will sometimes jump from 20% life down to something like 1-3% on the indicator in mere seconds and powers off shortly thereafter.
Basically the phone gets down to what shows as 20% battery life and may shut down at any point after that....This could be because the battery has not been properly calaberated try the link below. http://www.apple.com/nz/batteries/iphone.html
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After installing iOS 6 battery life is awful on iPhone 4S
Hello All,
I just want to share a problem I am having with my iphone 4s. After installing iOS 6.0.1 on it, the battery life is very bad, I could probably say unacceptable, after fully charging it, it would not last even 12 hours before the battery runs out and also i have noticed that the battery or back of the phone gets hot, I would say hotter than before I did the upgrade. I am just wondering if anyone could share some thoughts. I hope Apple comes out with a fix to this issue because I have noticed that a lot of people are having this problem.
Thank youHmmm...Apple doesn't support downgrading. If true you must have jailbroken your phone rather than properly repair the problem.
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Usual battery life on 160gb classic when using iTrip/dock connector mainly!
Hi folks,new to the iPOD scene! I mainly use my ipod in the car with an iTrip(no charger connected) and connected to my hifi(Stereo)with the apple dock (without the charger on so far) Just wondering if I use my ipod in this fashion should battery life be lower? Would appreciate if anyone could indicate what average life of battery should be overall. my typical use of ipod is to and from work (one hours use total per day and maybe an hour in the evening on the hifi. I assume time as well as actual use also contributes to the battery losing charge eventually(as a cell phone does)? any info on this would be appreciated...thanks
The iPod Classic 160GB is certainly not friendly with the Bose SoundDock.
http://discussions.apple.com/thread.jspa?threadID=1184812&start=50&tstart=0
http://www.oreillynet.com/mac/blog/2007/09/firstweek_with_the_160_gbipo.html
I haven't seen my particular problem on any other forums yet. But this seems a bit extreme, causing such a complete meltdown on a brand new iPod.
I plugged it into my PowerBook around 3:30pm and I could hear clicks coming from the hard drive for the very first time... I am not sure whether or not to be excited because the screen is still dead black (not digital black). So this still isn't resolved, but I can give advice to new iPod Classic owners:
_NEVER CHARGE YOUR NEW iPOD CLASSIC ON THE BOSE SOUNDDOCK!_ -
Battery life still poor after replacement with brand new internal battery!
The geniuses at the A-store can't find any hardware issues. The battery still only lasts 2-3 hours whereas before I could watch 2 full-lenth movies and still have 20% power left.
Fresh install of Snow Leopard makes no difference nor does booting from an external drive.
Reset PRAM, SMC, etc. but makes no difference. Does anybody knows what causes this sudden drain?
Also, will I be able to get my money back for the battery replacement since it made no difference (the old one was fine at 324 cycles and probably tossed.Have you calibrated the battery?
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My iPhone 4S is not charging, I change my battery also but still the problem persist. Some times it charge but most of the time it doesn't
Clean iPhone charging port with toothbrush and isopropyl alcohol. Try another USB cable. Next step after this, is replacing the charging port assembly with flex cable, lower mic and home button flex connector all a less than $10 single part.
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I have been told by the apple store that I have a software problem but have not been given any assistance on how to resolve the issue. Even with a full charge the device will power off, most of the time stating that the battery is dead. However, when I plug it in the device will show adiquate battery to operate. It will even ask what my phone number is before I can send a text or get any voicemail.
I tried looking on the help pages but nothing has seemed to make a difference. All of my children hve moved out so I don't have anyone else to get assistance from. I am afraid to do a restore because I can't find where my data is stored in my computer.
Any help is greatly appreciated!
Thanks, ShelbyYes, assuming they are currently on the computer.
If the iPhone has been used as designed, contacts are either in a supported application on the computer or are synced to a cloud service.
Pictures would be copied to the comptuer regularly and then those desired to be on the device would be synced back. -
ive been locked out of my apple app store account , ive followed the links and succesfully changed my password , which works to get in to here , so it must be good , but when i try and log into the apple app store on my iphone 4s , i get , Your account has been disabled , with no other explination ? any idea,s ?
You will need to contact iTunes support.
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I am trying to figure out how to improve my battery life on my new Iphone 4S. It is so poor ! I had a blackberry for few years and just bought my new Iphone. So disappointed in this battery life!
Would appreciate any help I can get on improving battery life. I am not using my phone for games. Only use it for texts and emails and very little surfing. Do have few apps. Don't use Siri much as I am in Canada and she isn't much help here like it is in the States; which is also disappointing.
I took my phone off charger at 9am this morning and didn't use it much till about 1pm and it already was only 53%. Used it a little for chatting with someone; a few emails and had to plug my phone in around 330pm.....
Help me????? I have read some people and they are seem to be complaining about this issue big time. Sure hope Apple does something about this!
MrsgolfieI understand all of this Meg; that is why I bought an Iphone; but never expected my phone not even give a at least a 24 or even 12 hours....I work 12 hour shifts and also would expect to have to charge each night but not twice a day or more. I am not always somewhere I can charge my phone.
Your points are true; however it doesn't help me...... -
Hey guys,
I currently have a Nokia 5800 XM on which I can get around 2 days of battery usage (sometimes slightly more).
My usage profile on the avareage day consists of
- 50m music player
- 20 mins web browsing
- Occasionally unlocking the screen to check the time, etc
- Bluetooth is off
- GPRS is off, only used when connecting to the net
- GSM is on (obviously)
- Wireless is off, but I turn it on on request when checking the web at home
I think it's a decent battery life, altough I don't use the phone very intensively.
I wonder how would the N8 perform in similar circumstances ?From my experience I am getting about the same time between charges as my 5800 with generally similar use but I am using the N8 a lot more for browsing as I often use the N8 now for web browsing instead of firing up my laptop.
If I shut eveything down except for the phone I am getting better battery life than the 5800.
The danger is that with the N8 being so much better you use it more and so the battery could last less time but that could be through more use rather than it being a problem with the battery life.
Just watch out for the "always connected wifi" bug... if you find that your N8 keeps reconnecting to wifi, even with all the wifi scanning and data stuff turned off, then delete your wifi access point and re-add it as that seems to fix it. -
Ios 5 caused awful battery life. HELP!!
Hi, so i updated my iphone 4 to ios 5. However, now the battery life is absolute abysmal. Playing 'crime city' for one minute made me lose 5% battery. But more importantly, even when i'm not using it at all i lose around 20% an hour. I fell asleep with 100% battery life, yet woke up to a dead phone. It also takes ages to charge my phone up. Why is this?!?! My iphone is virtually unusable with the ios 5. Any tips, at all??
I've had the same problem since upgrading to iOS 5. I did a Google search and came across a post by someone that did some troubleshooting to find the source of the problem. The issue appears to be with iCloud. For some reason it runs a constant data stream to the phone and drains the battery at the same time. I had to turn off my cellular data connection because iOS 5 somehow burned through 90% of my 200mb data plan in 2 days. I deleted the iCloud account from my phone this morning, so we'll see if that has any effect next time I'm on wi-fi.
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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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