Cell Phone Signal Booster for Car and Truck - 45dB Dual Band 850/1900MHz GSM 3G Repeater Amplifier for Vehicle with Antenna - Boost Voice and 3G Data BETTER VOICE AND DATA - Get fewer dropped calls, better voice quality, faster uploads and downloads. Enhances GSM and 3G signals for everyone in the vehicle. COMPATIBLE WITH ALL US NETWORKS - Works on Verizon, AT&T, T-Mobile, US Cellular, Straight Talk and more WORKS WITH ALL CELLULAR DEVICES - Boosts performance for iPhone, Samsung, Android and other phones and mobile devices. COMPATIBLE WITH ALL US NETWORKS - Works on Verizon, AT&T, T-Mobile, US Cellular, Straight Talk and more PERFORMANCE GUARANTEED - FCC Certified, 30-day money-back guarantee, 3-month free replacement, 5-year manufacturer warranty.