Nextivity Cel-fi DUO 3G/4G/LTE Cell Phone Signal Booster - for T-Mobile Cellular Service

All you need is one place in your home or office that gets one usable bar of T-Mobile 3G, 4G, or LTE coverage. 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, surfing, and improved voice coverage. T-Mobile: 4G LTE, 4G HSPA+, and 3G dual band (AWS, 1.9GHz: 3GPP band 2 & band 4).

Simply plug Cel-Fi's Mobile Phone Signal Repeater in. Cel-Fi is absolutely void of any antennas, cables, switches or configuration needs, making it totally plug and play. Since both units communicate wirelessly, you can put them in the best location in your house or office, and Cel-Fi configures itself automatically.

Your communication and data are secure. Because Cel-Fi repeats T-Mobile wireless signal, it maintains all of the security protocols of the T-Mobile Wireless network. Your call or data session is never transmitted over the internet.

Systems sold in the US will not have the external antenna adaptor.

This is a CONSUMER device. BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider's consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider. You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person.

You MUST cease operating this device immediately if requested by the FCC or a licensed wireless service provider.

WARNING. E911 location information may not be provided or may be inaccurate for calls served by using this device.