Review on 📶 Phonetone Home Cell Phone Signal Booster - Boosts All Carriers Verizon AT&T T-Mobile Voice and Data, Supports Multiple Devices, FCC Approved by Robert Diaz

It is very important to ensure good separation between the external and internal antennas, otherwise the system will simply oscillate and not work. It's very good if you can place the outdoor antenna on a pole opposite some cell towers and the indoor antenna as far as the cable goes to where you intend to use your phones. All LEDs light up green if you have done everything correctly. The internal power is weak because it has to be (otherwise it will be fed back to the external antenna). Still gives me two bars and a great achievement. Now never drop calls again.