DOES NOT WORK ON VERIZON DROID CHARGE PHONES. SORRY!
Version 1.2 just released!
Please be aware that once in a while the Verizon LTE network takes a bit longer than usual to reconnect. This is not a flaw in the app but something that is on the Verizon side. One potential way to increase the speed of the switch over is to put the phone in airplane mode and then take it back out immediately after making the switch. This should force the phone to reconnect a bit faster. Verizon says fix is coming!
More info on the long transition time, check out: http://www.computerworld.com/s/article/9200839/Modem_hand_off_from_3G_to_LTE_can_take_two_minutes_Verizon_says
Android phones are notorious for bad battery life and now that there is 4G LTE, it's even worse. Turn off your 4G when you're not using it and INCREASE YOUR BATTERY LIFE UP TO 4X!!! Use this utility to easily open the SECRET phone screen that allows you to turn off your 4G LTE service (future versions will automate the process).
Made for HTC Thunderbolt and 4G LTE but MAY work on other phones (with different instructions).
All upgrades are free! Future versions will make this process easier.