Spec4G LTE CellSpot (Box will be White or Pink from Manufacturer. Maximum connections 16 simultaneous users (8 on 4G LTE, and 8 on 3G/4G UMTS) Any T-Mobile customer within range can connect securely, and connections cannot be blocked. Your house guests or office staff can use the CellSpot without any extra setup. Only T-Mobile customers can use the mini tower. RangeApproximately 3,000 square feet Moving into 4G LTE CellSpot area When the call is ended, the phone automatically connects to the 4G LTE CellSpot signal. he 4G LTE CellSpot is a mini cell tower in your home or small office, which connects through your high-speed Internet. It creates a 3G/4G and 4G LTE signal to create better indoor coverage, more dependable voice calls, and consistent data speeds. Your phone or device connects to the CellSpot over 3G, 4G, or 4G LTE, and your usage is billed to your account the same as your usage of the larger T-Mobile cellular network. You don't need any indoor signal at home or Wi-Fi.