How To Fix Battery Drain On Unlocked iPhone 3G/3GS

Ever since the latest iOS 4.2 firmware was released for the iOS devices, there has been a lot of talk about the battery life on these units. While on one hand, we have Nokia Siemens claiming that a new NFCD technology on iOS 4.2 should ensure optimal battery usage and thereby increase battery life, we have been hearing from iPod Touch usersĀ about the battery drain that their gadgets have been experiencing with the latest update.

It doesn’t stop here. A number of iPhone 3G and iPhone 3GS users who have unlocked their handsets with the recently released UltraSn0w 1.2 software have been complaining about the battery drain on their devices. Apple is not to blame here and the jailbreakers are currently working on a fix to this issue that is expected to be released over Cydia shortly.

Apparently, the issue is with the hacktivation process that allows users to activate their phones using PwnageTool or RedSn0w instead of an official SIM. If you are one of those affected by the issue, you can try out one of the following methods

Option 1 : Get hold of an official SIM from a friend and activate the phone normally with this SIM. Once it is activated, take it out and replace it with your replacement SIM.

Option 2 : A workaround is to install the SBSettings app from Cydia and use it to quickly toggle the 3G network to OFF any time you don’t need it. You can save a lot of battery this way.