Go into Verizon and get a new SIM card. It's free. Worth the try before you get another device. Also, do a factory reset to reset O/S. Backup first!
So much for the fix. I just got a SIM card error.....post SIM card update....WTF. Having this phone is like marriage. One day perfectly in love, the next day asking where have I mistreated you......
Sent from my DNA.
I too have had the same issue tried four different (new sim cards with no luck, Verizon sent mem a replacement then two days after that the screen shattered and the sim card no service started again multiple times, I do not have insurance so My phone is on it's way to HTC, for screen replacement and sim card reader fix, and my mobile data is always diconnected even though it's turned on, this will be my last final attempt at the DNA, Verizon wan't able to assist me wuith the data issue. wifi works flawlessly but 4G or 3G signal blows. This phone blows.
confucius say: man with out droid, is like toast with no butter, not worth a damn!
I had the same problem not long after I got my phone. I read about it online tried several fixes and finally went to the store and had the SIM card replaced. Not a problem since ... with this issue. Guess I am one of the lucky ones.