I just received a replacement for my motorola droid 4. In the start up tutorial, first thing it says it take out sim card from old phone and put it in the new one. I've done that but the screen stays on A SKM card is needed to operate this phone. Please turn off your phone and insert your SIM card. I have powered off and re inserted the SIM card several times but it continues to not recognize that the SIM card is installed. HELP!!!