iOS 6 iPhone 4s battery drain

Did an OTA update to iOS 6, and my iPhone 4s is draining quite quickly almost a percent every three minutes


Only apps running are Settings, Messages, Phone, and Mail, and Location Servces are on for Google, Maps, Nearby, Reminders, Safari, Siri, weather, and YP Mobile (sames as before the iOS 6 update) All apps are up to date, and restarted the phone twice. On local WiFi, with AT&T cellular service, four bars.


Phone would get warm at times as well.


Maybe it's an anomaly, else, lets see if this post grows...

Posted on Sep 19, 2012 12:39 PM

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2,468 replies

Sep 22, 2012 6:32 AM in response to Greg Bastug1

I installed IOS 6 and like others experienced immediate excess battery drain. Reading this thread this morning my IP4 dropped from 100% down to 95% in very short order.

I just did a reboot, the phone rebooted @ 98% and has since only dropped to 97%

It's as if the phone thinks the battery is dying and acts accordingly. All those with drainage issues check to see how long the phone takes to charge, maybe the battery isn't dying, the phone just thinks it is.

Sep 22, 2012 6:36 AM in response to Greg Bastug1

Beside the battery drain issue on 4s after update to iOS 6.


Im facing another problem. While any app is running on background, the auto screen lock just fail, not working! The screen will turns on forever! Which this never happen on iOS 5!


Any one else facing the same issue? THIS IS KILLING ME! APPLE, please solve battery issue as quick as possible?


And this happen on every IOS version updates? since 5?

Sep 22, 2012 7:45 AM in response to Greg Bastug1

Origibally upfraded from within the settings app on iphobe 4s OTA.

So far this worked for me.


1. Restored using iTunes and a fresh download.

2. Signed out of Facebook in the settings app( so no more tap to post)

3. Signed out if twitter in settings app.


Running beautifully. Not sure which of thev3 it was yet.

I will eventually try signing back into Facebook integration but for now I will hold off.

Sep 22, 2012 8:11 AM in response to Greg Bastug1

I have also experienced greater battery drain then normal since the iOS 6 upgrade. Went through all the settings to ensure they are the same as before the upgrade and did a hard reset holding the home and power buttons down. Doesn't seem to have helped. Battery drain is not terrible just faster then before the upgrade. I don't know if this matters but with the Siri raise to speak off if I look at the sensor through a digital camera it is blinking blue. I looked at my wife's phone (she has not upgraded yet) and the sensor is not blinking. Could this be a source of the increases battery drain?

Sep 22, 2012 9:01 AM in response to MKM1874

Also did the upgrade via OTA. So did a full restore today. Wiped all data and set up a new phone. As far as I can say something yet, I would say that it hasn't helped. After iTunes finished syncing, I launched a bunch of apps for setting them up (and closed them again after I set them up). In half an hour my iPhone 4S lost 18%. Did a reboot now and haven't done anything special with it yet and the battery has only lost 1% in the last 20 minutes. I will post again tomorrow. Hope really this fixed it... PLS Apple fix this ASAP!!!

Sep 22, 2012 9:06 AM in response to Greg Bastug1

Ditto. Same settings but major battery drain. Will I never learn? NEVER update Apple software when first released!!! Of course they practically forced this update on iPhone owners. I am starting to think that Apple is losing it. Has anybody tried the new earbuds? I ordered two pair and THEY ARE AWFUL!! Awkward, clunky and uncomfortable. A definite misstep.

Sep 22, 2012 10:23 AM in response to Greg Bastug1

My phone is still having the same problem; accelerated battery drain. There is definitely something wrong with the software. I think my iPhone 4S battery isn't actually draining this fast, but the phone is telling it it is. It charges back up to 100% faster than it did in iOS 5 which leads me to believe that the actually % the phone shows is inaccurate. Does anyone else think the same?

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iOS 6 iPhone 4s battery drain

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