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Old Feb 19, 2013, 08:47 AM   #51
ITsAllOk
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Join Date: Feb 2013
6.1.1 Battery Drain fix

After updating my 4S to iOS 6.1.1, my iPhone's battery would drain completely in about 4 hours (compared to lasting about 20 hours with 6.1).
This was related to the Exchange account on the phone and the calendar bug in the previous iOS 6.1.

Here's what I did to fix it.
- Removed Exchange account from the phone.
- Reset Settings back to factory default (did not clear all apps and data)
- Had my exchange administrator disassociate my device from exchange
- Rebooted phone
- After 1/2 hour I added my Exchange account back on my phone

Battery consumption went back to normal.
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Old Feb 19, 2013, 01:44 PM   #52
ITsAllOk
macrumors newbie
 
Join Date: Feb 2013
Quote:
Originally Posted by ITsAllOk View Post
After updating my 4S to iOS 6.1.1, my iPhone's battery would drain completely in about 4 hours (compared to lasting about 20 hours with 6.1).
This was related to the Exchange account on the phone and the calendar bug in the previous iOS 6.1.

Here's what I did to fix it.
- Removed Exchange account from the phone.
- Reset Settings back to factory default (did not clear all apps and data)
- Had my exchange administrator disassociate my device from exchange
- Rebooted phone
- After 1/2 hour I added my Exchange account back on my phone

Battery consumption went back to normal.
Update: I just noticed iOS 6.1.2 upgrade is available today. It reportedly fixes the Exchange calendar bug and battery drain. I'm installing now.
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