I have had and HTC Thunderbolt since they were released. Last year, my Thunderbolt began requiring me to activate the phone. Soon, it was completely not working. I took it into the store and the tech told me the phone was no longer being recognized by the network. We changed the SIM card and I left. A few days later the same thing happened. The telephone was replaced. It has happened several times since then. So, I am on SIM card 3 and phone 3 or 4. All Thunderbolt. Is this a known problem with the telephone? I have a hard time believing it keeps happening and it is not something with the telephone.
This is very strange rpitt5pm! Due to the multiple replacements of phones and SIM cards, I would think that this issues may be associated to a third party application installed on your phone. Please run and test in safe mode http://bit.ly/vifLpt for a few hours and let us know of the performance results.
Follow us on Twitter at www.twitter.com/VZWSupport