Full support for VoLTE to ensure continuous high quality voice calls, while simultaneously streaming high-speed data to other users.

Enhanced echo cancellation delivers an improved signal throughout the coverage “bubble”.

Color display screens deliver an easy-to-use graphical interface that provides a whole system view of installation and device status to maximize system performance.

Cel-Fi Pro is quite simply the easiest booster to install, ensuring users have a strong cellular signal within minutes after plugging it in.

Same plug-and-play functionality means no need for external antennas, cabling or subscriber configuration.

Automatic configuration in the selection of UMTS/HSPA+/LTE bands.

10 times more gain than the earlier version.

Up to four bands with channels of 5, 10, 15 or 20MHz to support up to 35MHz of boosted bandwidth. AT&T Quad Band LTE, 3G and 4G HSPA+ on 3GPP band 2, 4, 5 and 12. Just a little bit of 3G, 4G or LTE signal strength and our revolutionary new Cel-Fi will bring you blazing fast downloads, smooth video and surfing, and improved voice coverage.

Cel-Fi PRO LTE Signal Booster for AT&T All you need is one place in your home or office that gets one bar of AT&T 3G, 4G or LTE coverage.

At&t cell phone booster