Originally Posted by soch
My 8220 says SIM card error and goes to SOS signal after a few minutes or seconds of use.
The same SIM works flawlessly in my old Pearl, 8100.
The only way to rectify is to remove battery and restart.
Called TMO they are going to replace my flip (free + shipping).
Wonder if anyone has found a solution to this other than the phone exchange.
I had this problem too, so I opened the back of the phone and wedged a thin piece of paper up between the Sim card and the plastic, now the Sim card doesnt move and Voila - no more Sos messages! Try it, Dave