Therefore, multiple devices should not be in close proximity or used alone to address coverage in large buildings. In this case, the devices will not interfere with one another, but they do not work together (such as not handing off calls between devices). Multiple CellSpots can be at different addresses in the same area.The address must have no existing CellSpot or signal booster.Only one coverage device is allowed per coverage use address.Locations must be an area where T-Mobile offers service and has local e911.This is for your safety, so emergency services can find your location. A valid e911 address is required on the line for the service to work.

You don't need any indoor signal at home or Wi-Fi.

Your phone or device connects to the CellSpot over 4G LTE and your usage is billed to your account the same as your usage of the larger T-Mobile cellular network. It creates 4G LTE signal for better indoor coverage, more dependable voice calls, and consistent data speeds. The 4G LTE CellSpot is a mini cell tower in your home or small office, which connects through your high-speed Internet.

Verizon signal booster