Last night I tried making a phone call and it never connected, ever since my phone starting saying "Invalid SIM." I power cycled it several times and then I backed it up and did a factory restore, the issue remains. I also popped the SIM card out, there doesn't seem to be any physical damage or dirt accumulation. Popped it back in and I was getting a normal Sprint signal for about 4 minutes, then the error message reappeared.
Is this something I can fix on my own or do I need to take my phone in? Also, since it's a SIM card do I need to take this to an Apple store or to my cell provider?
Thanks!
Is this something I can fix on my own or do I need to take my phone in? Also, since it's a SIM card do I need to take this to an Apple store or to my cell provider?
Thanks!