My iPhone shows "invalid sim". I tried restarting it multiple times however it keeps showing up as "sim failure". I tried putting the sim into other phones and it shows the same message. HELP!!!!
Hi, The sim was working for the past 4 months in that very same iPhone. I switched phones briefly and then switched back (briefly as in a few minutes). I tried updating my phone as well factory resetting it. My account is also active. I tried the si...