Auto3G, Extends your iPhone’s Battery Life by Automatically Turning Off 3G [Update x1]

Auto3G is a simple tweak in Cydia that increases your iPhone's battery life by turning off 3G raido (leaving 2G radio on) when you don't need it automatically. In brief, it turns off your 3G radio when your iPhone in standby, turns on when you unlock it.

This tweak is really useful in saving battery life as Apple explains "iPhone 4 offers up to 7 hours of talk time on 3G, 14 hours of talk time on 2G, 6 hours of Internet use on 3G" so this tweak may doubles your battery life. Auto3G is available in Cydia for $5.00 via Big Boss repo.

Update 1: A new update has just released for the Auto3G app, it was updated to version 1.3, here is the changelog:
-Improved icon.
-Fixed problems with the activation process.
-Fixed issue where the tweaks 3G network by blocking the switch to 2G, 3G when that is not available.
-Fixed minor bugs.

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