T-Mobile Personal CellSpot 4G LTE Signal Booster for sale.
It works with any carriers that use T-mobile networks (e.g. MetroPCS, MintSim, Ultra Mobile, Walmart Family Mobile, etc)
It is 100% working and in very good condition.
Comes with 1 window unit (4G LTE signal receiver) and 1 coverage unit (place it where you have weak signal) and power supplies for each.