Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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Touch screen is overly sensitive

I replaced the front screen assembly and now when I make calls my touchscreen is so sensitive that my face causes unpredictable behavior like I am pressing random buttons like mute, keypad and speaker. Is there a setting that can be changed to adjust sensitivity?

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sounds like the proximity sensor isn't working properly. to check this make call and then instead of putting phone to your face, place hand over the top 1/3 of screen. the screen should go dark. If it isn't then I suspect you haven't replaced connector 3 properly. take it out, inspect the flex for dirt and damage and also the connection itself. Then place flex back in again-doesn't have to be right up to white line, just in enough to feel resistance.

see if that helps, if not then you may have to replace the flex.

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