Cel-Fi Duo For T-Mobile

by Cel-Fi

Product no longer available

We are no longer selling Cel-Fi Duo For T-Mobile.

A replacement is available here: Cel-Fi GO X

Carbon neutral deliveries

Product Description

The Cel-Fi Duo is a fully wireless signal booster that dramatically improves indoor 3G/4G/LTE voice and data for T-Mobile. This system has no external cables or antennas - the Network Unit receives the signal from the mobile network and relays it to the Coverage Unit to amplify your signal. Ideal for residential environments.

The Cel-Fi Duo comes with a 2-Year Warranty.


The coverage area you can expect from any signal booster kit depends on the signal strength outside the building.

Outdoor Signal Estimated coverage area
Strong outdoor signal (5 bars) up to 6,000 sq. ft. coverage
Medium outdoor signal (3-4 bars) up to 4,000 sq. ft. coverage
Weak outdoor signal (1-2 bars) up to 2,000 sq. ft. coverage


SKU 590N203-001-10
Weight 19.8/13.7 oz
Dimensions 6" x 5.7" x 2.3"
Power supply 12 VDC
Coverage 2000 sq ft (1 coverage with weak signal)
4000 sq ft (2 coverage with medium signal)
6000 sq ft (3 coverage with strong signal)

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We stand behind the products we sell. We’ll accept a return anytime within 90 days if you’re not happy with your purchase from us.

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Large Building?

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Our signal experts have helped design and install kits in buildings of over 200,000 sq ft. Let us help you find the right product.

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