T-Mobile offers users free 4G LTE CellSpot to boost indoor cellular coverage

T-Mobile on Tuesday announced an indoor 4G LTE CellSpot that will help small businesses and residents connect up to 16 simultaneous calls or data sessions.
The device is free to T-Mobile Simple Choice postpaid customers as long as they remain with the carrier, and a $25 deposit is required. The device will be available Wednesday through T-Mobile customer care or participating stores nationwide.
T-Mobile CEO John Legere called the CellSpot the first mini tower available from a U.S. carrier, and