With the last update of the iOS, the batteries drain is here. again!

The following few workarounds worked with the 4.1 iOS update.

 

  • Calibrate the iPhone battery, simply charge your iPhone and then wait for a complete drain. Then charge again your iPhone and check for battery drain.
  • Disable the location manager, go to Settings > General > Location Services and turn off location services for all the applications. Then turn on the location manager only for few applications and check for battery. In this way you can identify which app is using  location services and is draining battery.
  • My cousin told me that his iPhone seems to check continuosly the internet, if so the go to Settings > General > Network , select Internet Tethering and turn off the Tethering.
  • If you have used the Game Center open it and logout from the Game Center. Don't forget to close the Game Center from the Multitasking.
  • Backup your iPhone and remove all applications, then add again one of the removed applications from iTunes and check for battery drain, repeat this step for each application. To speed up this process you can proceed with groups of applications.
  • Last but not least close all opened windows in Safari.

This time, the only fix I found was to factory restore the phone with iOS 4.3, then I set up everything manually.

If I restore the data using the backup the iPhone drains the batteries.

If you have any hints please leave a comment.

Gg