T-Mobile wants everyone to get reliable full-bar LTE signals everywhere, even in their own homes. To do just that, the Uncarrier is launching an 8.5-inch wide and 8.5-inch tall 4G LTE CellSpot that can deliver LTE data and calling in a 3,000-square-feet coverage in homes.

Billed as a mini cell tower, the device needs to connect to an Internet router, and users will need LTE-capable handsets to use it. As part of its Uncarrier 7.0, T-Mobile earlier released a similar service, called the Wi-Fi CellSpot Router, and more than 1 million units have been distributed and over 11.2 million calls via Wi-Fi are being made daily.

This time, as part of its Uncarrier 10, T-Mobile takes it up a notch with its 4G LTE CellSpot, as customers will no longer need Wi-Fi to get coverage.

"Where the T-Mobile Wi-Fi CellSpot's like a T-Mobile tower, this new 4G LTE CellSpot is a T-Mobile mini-tower-and it's a huge feat of engineering," says John Legere, T-Mobile's president and CEO.

On top of that, the 4G LTE variant will provide the latest features offered by the Uncarrier, including but not limited to VoLTE, advanced messaging, video calling and HD voice, supporting up to 16 calls at a time. Just like any other cell tower, T-Mobile users can connect automatically without the need to log in or input a password.

This is the first 4G LTE mini tower that's available from a U.S. wireless carrier, and it is also the solution to T-Mobile's problem with dead zones, which Legere and customers are aware of.

The T-Mobile 4G LTE CellSpot is free to Simple Choice postpaid customers, and it includes a refundable $25 deposit with a non-return fee, which is limited to one per business or home. The device will start rolling out on Nov. 4.

Hit up the video below to watch Legere talk about the 4G LTE CellSpot.