F20 Series | Cell Phone Signal Booster For All European Carriers on Band 1, 3, 7, 8 | 70dB Max Gain Cellular Repeater | Boost 4G LTE 3G GSM Signals | Comes with Omni-directional Antenna

This booster features an LCD touch screen, AGC function, dual indoor antennas, and compatibility with multiple devices and frequency bands. It supports easy installation with a Signal Advisor app.

• The description claims the booster improves signal quality and data speeds.
• The description claims the booster expands coverage up to 400 square meters.
• The description claims the booster is compatible with 900MHz, 1800MHz, 2100MHz, and 2600MHz frequency bands.