WIRELESS service provider Smart Communications has started testing on its network the use of Cel-Fi, a globally-recognized signal-boosting device that eliminates so-called dead spots inside homes and offices, and dramatically improves mobile reception for voice and data in enclosed spaces.

Indoor dead spots are a common annoyance and may be attributed to nearby physical obstructions causing signal degradation, among other reasons, and result in dropped calls, delayed messages and crawling upload and download speeds.


The Cel-Fi addresses this situation by tapping at least one bar of available 3G signal and amplifying it, boosting both 3G and 4G HSPA+ mobile connectivity throughout a specific area. Designed by US-based Nextivity, the device can handle 60 simultaneous calls and support high-speed connections reaching 42 Mbps in an area of up to 1,200 sq. m., making it ideal for homes and small offices.

“As the leader in wireless services, Smart has continually been on the lookout for new technologies that can enhance the consumers’ mobile experience and offer the best value for them,” said Smart co-founder and chief wireless advisor Orlando Vea. “Cel-Fi offers a lot of promise because it functions much like a personal cell site and boosts the network performance in corners where signal strength is challenged.”

A set of Cel-Fi consists of a window unit and coverage unit, which communicate to each other wirelessly. The window unit is meant to be stationed at a spot where the strongest signal from the network carrier is received. The coverage unit is positioned at the center of the house or a building.


When powered up, the window unit relays whatever signal it receives to the coverage unit, which then cleans the signal, converts it and amplifies it throughout the whole area.

Distinguishing itself from traditional analog boosters, the Cel-Fi is a plug-and-play device and may be installed in minutes with no need for cables, antennas or configuration.

The device also relies on self-organizing algorithms to maximize coverage area and makes sure it does not interfere with mobile operator networks or impede the signals of other subscribers.

Compliant with the strict standards of the Federal Communications Commission, Cel-Fi is authorized for use by 120 mobile operators around the world, including AT&T and T-Mobile. (PR)