Lintratek LTK 604: 3G Mobile Signal Booster is a single band mobile signal booster and can boost signal strength for all network operators tuned in the frequency band of 2100 MHz. This is a booster that is capable of giving you excellent voice quality and data stability on devices like smartphones, tablets, data cards, etc. Especially meant for shops, offices and homes measuring up to 2,600 Sq. ft. Its low weight and compact design make it easy to install anywhere within your premises.