Here's an unexpected little treat that's come out of the latest update to the HTC ThunderBolt. Somebody (not sure if it was Verizon or HTC) finally decided it'd be a good idea to give us a way to turn off LTE if we so feel like it. All you have to do is go to Settings>Wireless and Networks>Mobile networks>Network mode, you'll get the option to set your preferred network to LTE/CDMA (ie 3G/4G, which is on by default), or CDMA (1xRTT/3G) only.
OK, so that's not quite as simple as a toggle widget like Sprint's put on its Wimax-capable devices. But it's easier and safer than diving into your modem settings (even if we do have those market shortcuts), and we'll take what we can get.
So if you find yourself in a spotty LTE area, or just want to save on battery, give this one a shot.
More: HTC ThunderBolt forums