Phonetone Car Cell Phone Booster for AT&T Verizon 4G LTE

Booster For 4G is ideal for Car,Track. It can improve 4G LTE voice and data signal for Verizon Band 13, and AT&T/T-mobile Band 12/17. Help avoid dropped calls and improve data speeds, bring you a more convenient life.Automatic Gain Control: The booster can sense the cellular ...Booster For 4G is ideal for Car,Track.

It can improve 4G LTE voice and data signal for Verizon Band 13, and AT&T/T-mobile Band 12/17. Help avoid dropped calls and improve data speeds, bring you a more convenient life.Automatic Gain Control: The booster can sense the cellular environment intelligently and adjust for maximum signal performance. Once installed, you never need to worry about it again.Inactivity Mode: When no user calls booster works in standby mode, so as to save energy.