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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Is the LCD Broken? If not, what is?

I dropped my Iphone the other day, and right afterwards the screen worked fine lighting up and showing some response to touch, but I could not get it unlocked (I managed to power it off after multiple tries, but I could never slide the unlock bar over). I figured the screen, which was cracked now was the problem, luckily I already had an extra screen so I replaced it myself (something I've done before). Now the iphone turns on, and you can see the screen but there is no back light, and no response from the screen at all. What is wrong exactly? Is the LCD broke, or is it the screen/digitizer? Thanks!

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Before opening and during repair of iPhone 3GS make sure iPhone is OFF. I would then carefully open iPhone and reconnect Flex Cables #1 LCD and #2 Digitizer. Then carefully close it back together. Turn it ON and see results, if problem, perform Reset holding both home and power buttons. If problem then could be Logic Board for either backlight or touch problems, or backlignt issue LCD, or Touch issue Digitizer.

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