"How to factory reset"에 답변Nothing seems to work for me. The power button won't lock the screen or holding down home + power + up or down volume doesn't reset the phone. I think it is in Demo mode but I wasn't able to reset the phone by going into settings and then about. I have a sim card in the phone but its not allowing me to get out of the demo mode, it has has small videos popping up as advertisement every 30 seconds. Please help!