Hello! I'm new to this forum so please don't shoot me down. I've had the HTC Thunderbolt for about a month. The first few weeks the phone had no issues. Over the last two weeks I've experienced random loss of 4G, 3G and usually the phone goes back to 1X. I've worked with Verizon and have gone thru all of their troubleshooting, including a factory reset. Yesterday Verizon decided to swap my phone out for a certified pre-owned....am I heading down the right road? I hate the fact that I paid good money for a new phone and am swapping it out for a used phone! Any and all comments will be greatly appreciated.