Close this search box.

AT&T Authorizes CEL-FI Smart Signal Booster For Use on Its Wireless Network

AT&T subscribers can now use the authorized CEL-FI Smart Signal Booster to eliminate in-building dead-zones and dropped calls.

SAN DIEGO, Calif. – July 23, 2013 – Nextivity Inc. today announced that AT&T has formally entered into an agreement with the company, authorizing the Nextivity CEL-FI Smart Signal Booster for use on the AT&T wireless network. This agreement makes CEL-FI the first consumer booster approved for use by the mobile operator. AT&T is the second top-tier operator in the United States to authorize CEL-FI for use on its wireless network, and joins more than 120 global operators that have already given the booster their stamp of approval.

CEL-FI is a carrier-grade, consumer-friendly signal booster that maximizes a user’s indoor wireless experience by eliminating in-building dead zones. It can more than quadruple wireless data speeds and eliminate dropped calls for wireless subscribers in their homes or offices by boosting signal strength from one bar to five bars. CEL-FI is fully compliant with the new Report and Order for signal boosters as defined by the Federal Communications Commission (FCC).

“Mobile operators, and AT&T in particular, have historically adopted an extremely strict policy against the use of consumer-class boosters on their networks due to interference and resulting damage caused by legacy repeaters,” says Werner Sievers, President and CEO of Nextivity Inc. “Having CEL-FI tested and approved by AT&T for use on its network is a significant milestone for our company and testament to our boosters’ unconditional network safety and ease of deployment, whether en masse as part of a strategic initiative, or singularly to alleviate coverage holes – all while maintaining harmony with the mobile network.”

CEL-FI relies on intelligent, self-organizing algorithms to maximize the area of coverage for users and ensure it does not compromise or interfere with mobile operator networks or impede other subscribers’ signals. CEL-FI does not require any new equipment or changes to existing network infrastructure, or mobile devices. Recognized for its superior design and effectiveness, CEL-FI is the only consumer booster authorized and approved by the communications commissions in Australia and the United Kingdom.

CEL-FI is ideal for small and medium-sized businesses and for use in multi-level homes. It provides one of the largest coverage footprints in the market – up to 13,000 square feet – with many simultaneous calls and many high-speed data connections. As a completely plug and play solution, CEL-FI eliminates the need for external antennas, cables, ladders, and drilling, ensuring that even the most non-technical customer can install the system in a matter of minutes.

Where to buy CEL-FI:
AT&T subscribers can get CEL-FI online at

About Nextivity Inc.
Founded in 2006 in California, Nextivity Inc. develops the CEL-FI Smart Signal Booster, the only booster authorized by AT&T, T-Mobile and 120 leading global mobile operators for use on their networks. Nextivity’s veteran engineering team has leveraged advanced signal processing and intelligent antenna design to develop the world’s only self-configuring, environmentally aware indoor coverage systems. Additional information is available at, on Twitter @5bars, and on Facebook ( Nextivity, the Nextivity logo, CEL-FI and IntelliBoost are registered trademarks of Nextivity Incorporated in the United States and/or other countries. All other trademarks are the property of their respective owners.

Media Contact
Marisa Marzano
Echo Communications (for Nextivity)
marisa (at)