mmkay so i have the samsung galaxy witch is one of the newer smart phones for tmobile and i took my sim card out the other day and put it back in that night and it was working perfectly then today my phone said I could only place emergency calls because I had no sim card in? So I turned it off and back on and I can now use the web call receive calls.and receive texts bbbuuttt it wont let me send any text messages? Anyone know why??