"WiFi Greyed out iOS 6.1.3"에 답변Confirmed! YoloRepair's fix does work,just do it like He says "enough to get it hot but not too hot" I used a Hair Dryer. Thanks =)
"My iPhone 4 does not turn on or charge."에 답변I recommend replacing the Charging Port,it has worked for me before.
"No turning on unless plugged in!"에 답변I have fixed a few iPhone 4's with this problem,very simple fix, just replace the battery and it should work. Good luck!
"iPhone 4s, turns off and then right back on by itself"에 답변I tried a few things but changing the charging port made the trick.