Q: iOS 6 iPhone 4s battery drain

OK, now I am really confused but for then better. I found something that worked (so far) for me today until Apple sends out an udate to fix. Did the reset and reload thru itunes and turned on only things I use such as location services for maps, siri, and weather. Manually push email. Icloud off. Auto brightness off. Notification only for phone, message, weather, calendar, and reminders. However, still battery drain (9/24). Drained battery to zero and did a full recharge BUT unplugged after less then 2 hours because it showed 100%(09/26). Still no help. Last night, made sure all apps were closed out, did a hard reset, HOWEVER, took the advice of some posters and left the phone on charge over night.... unplugged at 8:30 am.... Checked the email a few times, sent some texts, went into setting a few times and to my amazement, I'm still at 99%.... Yesterday at this time I was in the mid 80's with the same minimal useage.

Genius appoinment tomorrow am so I really going to monitor this. I will start to open apps that I use, such as facebook and maybe do a quick browse on safari. Will post back later.

Hopefully this post will help someone else until the bugs are worked out with a firmware update.

I have 100% for 15-20 minutes but after 99% battery drains quickly as well.

Had 100% at 8:30 and didnt drop to 99% unril 11:30 and that was after I checked weather, a few texts, checked email....

Just start some heavy app and you'll see

Here is the steps I followed for battery calibration:

1. Use the iPhone until it it shuts OFF itself, due to Low Battery.

    This should be eaasy since it is the problem.

2. Then Charge it back up without interruption, like unplugging it, to full charge 100%.

    I didn't pay attention to how long it takes.I typically charge it through an external power plug (the little cubic thing that cost less than $5.)

3. Before you use the phone, reset iPhone by holding both home and power buttons until the iPhone restarts itself, ignore the "slide to power off slider", let the iPhone restart itself.

That's it. I think the purpose for this is to let the related software modue learn your battery.

What is a "heavy" app? I am not an app person other then facebook (which is minimal, maybe 5 minutes just to check) and then I sign out and I might use safari to look some things up. Once in a while, i might watch a youtube video say for a product review.... That's it.... that is why I was and still am upset over this battery drain issue.

It charges as quick as always, about an hour and a half or so.

I am glad you've found something that works.  I'm not going to do all that however.  I already restored as new twice, and that's enough.  It should work as advertized. I knew I shouldn't have updated from 5.1.1, but I talked myself into it, against my better judgement, now I have to live with it.  If I have to go through all these steps, I'd rather not have the phone at all.

Ok. Maybe you can do a simple test - turn of auto brightness and set brightness to 50%. Set your lock time to "Never" and start Stopwatch. When battery drain on 1% from 100 to 99 make a lap. then wait 99 to 98, lap too and post it.

Guys please sorry for my English, i'am from a non-English speaking country,

I know what you mean.... I stared at the update for like 15-20 minutes before I went ahead and did it. Just like you, I went against my my better judgement... I guess I should have looked back at prior post when apple released ios 5 and the issues regarding updating.... I probably would not have done the upgrade if I knew no rollback was possible.... This was my error, and like you, got caught up in the excitement to try the new features... For me, it was maps with navigation....

I didn't really need the new features, but I'm an early adopter geek, so I often end up paying for that, instead of waiting like my mind tells me to.  I doubt I'll do it again next time.  Sadly, I remember the early ios 5 issues and I still did it.  I thought it wouldn't happen again.  Live and learn (sometimes).  I'll be charging a lot!

Thank for the advice on the test but for me, this would be unnecessary. I would expect a 1 to 3 percent drop if I was using a "Heavy App" which is using 3g (not wifi) such as navigation. The point of my post and trying to help other posters with similar issues is I found a " Possible Temporary Fix" for people who use their phone such as I. I found it unacceptable to watch my battery drop just mainly texting and maybe 45 minutes worth of phone calls from 100% to say 60 to 70% in hour or two. Bottom line here is Apple has to find the issues and correct them ASAP.... 

Well, after trying all of the suggestions here and none of them working, I finally

Set my phone up as a new phone. Before, I would go from 100% to dead phone

in about 4 hours with very little usage. So far today I've got an hour of usage and an hour and 15 minutes

of standby time and I'm at 85%. Also, for the first time, it appears my iCloud bookmark

sync is finally working correctly.

The phone (4S) is now working much better than it was after the OTA update to iOS6,

but I'm not sure yet if it is working as well as iOS5 in regard to battery drain.

It really wasn't that big of a deal to set it up as a new phone. A sync got all of my apps and

music back. The only thing that was a pain was email accounts, but I had my iPad to get server

addresses off of.

After reading this complete thread and trying different small fixes, PMohan may have given me THE ANSWER!  I completely removed the Facebook App.  Most, if not all of the negative symptoms disappeared!  Fast battery drain, the phone getting hot on the back, not being able to Sync with iTunes, getting kicked out of apps ... all of them.  In the past 4 hours, I have only experienced 14% battery drain (which seems like it was pre-iOs 6) with some intermittent phone use and mail notifications.  I can now text someone without the App dropping me and returning to the Home Screen.  I can now Sync with iTunes.  I will keep my fingers crossed and live without Facebook on my phone til I hear about a fix for that App.

It's worth a try to just delete Facebook (a very common thing that almost all of us have on our phones) and see if it temporarily cures your ills.

P.S. - I did not cave at any time and Restore my phone.  I'm too lazy and it was too early.  Hope this helps someone.  Thanks PMohan!

Hey guys

I decided to take a different approach on my iPhone 4S and thought everyone else is turning off this feature and that feature. So I decided to see what would happen if I literaly turn on every single feature that i find in the settings (including those that use 3G data). I did this yesterday and was quite baffled at the fact that it had iproved my battery significantly. Here is my current usage time since charging it yesterday to 100%:

And as you can see I still have 26% battery remaining and used the phone with literally all the features on. And also I have also noticed that when charged to 100%, regardless of how much I use my phone the indicator shows 100% for about 1 to 1 and 1/2 hours but once it reaches 99% thats when the indicator tends to drop faster. Maybe the bug in iOS 6 just isn't displaying the the battery correcly. I'm also going to try taking off facebook and all its integration again to see if it improves it any further.

Also correct me if I'm wrong but I thought that when you charge the phone to 100% doesn't the software not tell the phone to stop charging once it reaches 100%. Therefore if we were to charge it for longer past 100% this would do nothing as the software stops the phone charging when the 100% indicator is reached ??