4G GSM Mobile Cell Phone Network Signal Booster

stay connected all the time by purchasing this signal booster .it brings the network to all SIM cards, airtel, telcom, and Safaricom. A mobile phone signal repeater provides the ultimate solution in any area where cellular communications can not work well due to a lack of signals.  The repeater device features easy installation & operation, a built-in indoor antenna, and no interference.  It could also improve indoor electromagnetism environments, protract cellular battery life, and reduce the radiation of cell phones.  A mobile phone repeater is ideal for house, home, and office use. our cell phone signal boosters work with all cellular telephone technologies and networks used in North America USA & Canada, The only exception is that of Push-to-Talk (PTT) networks which are one wireless telecom service platform that is being phased out already. All our signal boosters are GSM signal boosters because they cover 698 MHz to 1755 MHz frequencies and bands that encompass the GSM network being used by several mobile service carriers in Canada and the United States. Furthermore, those frequencies also cover other wireless networks including CDMA, WCDMA, EDGE, HSPA+, and EVDO