If the proximity sensor of your iPhone 3G is damaged in any way, your mobile will fail to adjust display brightness or activity when your phone is held up to your ear. This, in turn, will cause your battery to be drained faster. Get this replacement part to fix the problem.
The Apple iPhone 3GS iPhone 3G Light & Proximity Sensor Flex Cable can resolve issues like:
One (1) Apple iPhone 3GS iPhone 3G Light & Proximity Sensor Flex Cable
|Phone Model||iPhone 3GS, iPhone 3G|
|Part Type||Flex Cable, Proximity Sensor|
|3 units available|