Here is another cell phone signal booster that reduces # of dropped calls while improving your battery life. The SureCall Flare DB+ is compatible with AT&T, T-Mobile, and Verizon networks. It can boost voice, text, and 4G LTE signal, with a coverage area of 3500 sqft.
The Flare DB+ uses a Yagi directional antenna. Simply set it up outside, run it into your home, and place the cellular amplifier anywhere you want to get better reception. The device looks like a speaker, so it fits right in your home.