Cel-Fi is the only signal booster authorized by T-Mobile and AT&T. Plug and play, insanely simple. 13,000sqft coverage.

Everywhere Every Time

Use your phone when you need it. Clear and reliable 3G and 4G voice and data. Goodbye, dropped calls.

13,000 sq ft Coverage

Ideal for a building, Cel-Fi has a large coverage area - up to 13,000 Sq. Ft. (1,235 m2).

Simultaneous Users

High capacity signal booster, handle many simultaneous calls and high speed data.

Insanely Simple

Power Cel-Fi - that's all you need to do. We made Cel-Fi so smart that it adapts itself to your environment.

Authorized by
T-Mobile and AT&T

Only signal booster authorized by T-Mobile, AT&T and 146 other operators around the world.

100% plug and play

The easiest installation ever! Simply power the Window Unit and the Coverage Unit and Cel-Fi is set!

Internal Antennas

Four internal high gain directional antennas, automatically selected for best coverage.

Need Only 1 Bar

1 bar of 3G or 4G signal near one window is all you need! Cel-Fi does the rest.

All Wireless

The Window Unit and the Coverage Unit communicate wirelessly, which makes setup a breeze.

Auto Configuration

Cel-Fi signal booster automatically configures itself according to your environment.

Easy on Battery

When your phone no longer has to use all of its energy trying to reach out to a far away cell site, it lasts longer and requires less charging.

Advanced Technology

Powered by two custom-designed, massively parallel, real-time and high-speed processors with 38 digital signal processors.

Design and Marketing by: excelacreative