Phonetone Cell Phone Signal Booster – Stay Connected Anywhere The Phonetone Phone Signal Booster for Car enhances your signal by up to 50dB improving call quality reducing dropped calls and boosting data speeds. This FCC-certified booster works with major U.S. carriers and supports 5G 4G LTE and 3G networks making it perfect for homes offices and travel. Whether you’re in an RV truck car or camper the Phonetone Booster is easy to install and supports multiple devices at once. It uses AA batteries for flexible power options so you stay connected no matter where you go. With a comprehensive warranty this reliable booster is built to meet the demands of today’s mobile lifestyle giving you peace of mind wherever you are.