T-Mobile now offers 4G LTE signal booster devices to customers of its Simple Choice phone plan to improve their indoor WiFi coverage.

The company announced on Monday Nov. 2 that its 4G mini-tower called 4G LTE CellSpot gives LTE coverage up to 3,000 square feet inside homes, businesses and other locations where signals are difficult to reach. The mini-tower will be available to customers with low power settings for indoor use.

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3G, 4G, and VoLTE-capable are the latest 4G LTE CellSpot devices that have small cells or femtocells and  provides all the usual LTE services. Voice over LTE (VoLTE), advanced messaging, HD voices, and video calling are among these services. No passwords or log-ins are required for T-Mobile customers to connect.

Its physical hardware is 8.5 inches wide, 8.5 inches tall, and 1.3 inches thick. It is connected to an Internet broadband service and plugged into a wall socket. It can support up to 16 calls at one time and is compatible with devices that have no WiFi calling capabilities.

Simple Choice postpaid customers can enjoy the new devices for free if they are also T-Mobile customers. Starting on Wednesday, Nov. 4, payment of a refundable $25 deposit at T-Mobile stores or through the company's Customer Care center can be offered.

President and Chief Executive Officer of T-Mobile John Legere mentioned that the company is doing everything it can with every proven technology available to provide customers with the best coverage possible.

Back in September 2014, T-Mobile's Un-carrier 7.0 was announced and Wifi CellSpot router devices were unveiled. Free WiFi calling services was launched to allow customers take advantage of WiFi hotspots and technologies in order to extend their mobile range and call quality. The Asus-made routers helps customers to solve dead-spot cellular problems that many users experience.

Ever since they were introduced last year, about 1 million WiFi CellSpot Routers have been used to facilitate more than 1 million calls each day using WiFi.

T-Mobile is set to unveiled the updated Un-carrier 7.0 services before Nov. 10 in Los Angeles.

TagsT-Mobile, T-Mobile News, T-Mobile Latest News, WiFi, 4G LTE CellSpot