i bought a used iphone 3gs for 20$ wich is pretty good price only thing is its on 4.3.5 and its emergency calls i connected to itunes using 2 different sims and it tells me sim is not suported or something about my carrier so i cant get past that also i dont have the sleep/wake/power button so i can manage to get into dfu mode i searched for hours and no result have i found hoping someone from here can help me with my issue