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.
This is the part which holds the earpiece speaker. It could be a broken cable #3 or some other damage. Does the proximity sensor respond normally? IE does the screen shut off when covering the top portion of the phone while on a call?