I believe the Thunderbolt has potential, it just never measured up to HTC and VZW hype. Up until mr2 I had a usable phone. Then came the unknown data drops, for me and countless others, which left us with delayed SMS & MMS messages and no internet connection. I even dropped phone usage (found they either showed as missed call or pending voicemails). To recover I use plenty of my extended battery reserve (went from 100%-69% trying to reconnect). I am in Rochester NY, one of the initial 4G rollout cities and up until mr2 I enjoyed 4G data without this 4G-3G-1X-no connection I have now. I'm stock and believe HTC & VZW owe me a fully functional 4G phone without having to root. I paid for more than I'm getting now :-( . I can't even get them to suggest anything beyond their goto "factory reset" , remove LTE OnOff, and not even a hint the onus is on them to fix a flawed update.