Hey guys sorry for restarting this thread. I have recently faced this "no service" issue after I had the repeated reboot problem. Thats solved now but I have the sim issue.
I have 2 sims, for carrier A and carrier B. Both work fine in my other HTC 8X.
When insert sim 1 in the affected phone, in network options it does detect the sim (it tells me that the sim is of carrier A), but there is not network service. At first I though it was a sim issue or a seating issue so I applied the tape fix. Didnt work. SO i put in my other sim, of carrier B, Its detected as carrier B sim if I go to network options in settins, but i get zero bars and no service
Any ideas