HT1688: AT&T online supportLearn about AT&T online support
Currently Being ModeratedFeb 6, 2013 7:01 PM (in response to stranger522)
Connect iPhone to Wall Charger for 10 minutes, it may turn ON itself. If still OFF, keep on Wall Charger and Reset, hold both home and power buttons until the iPhone begins to start. This can take about 20 seconds of holding both buttons while on the charger.