Different model # on battery iPhone 4s, now SIM card won't read?
I made sure to order the exact same battery, part number APN: 616-0580, and what did I get in the mail? Of course, APN 616-0579. Does the part number make a big difference? When I installed the new battery (along with replace the front screen/lcd), the SIM card won't read and has no service, can't make phone calls etc. Is this a different issue, or should I make sure to get APN 616-0580?