I just got the 4G LTE Verizon/Samsung extender and it works great! I'm living in the basement level of a townhome, they have no problems with cell calls upstairs but I was getting dropped calls all the time. I never had more than 1-2 bars, often zero, now always 4. I have great wi-fi and had set my iPhone to "wi-fi calling", etc, but was still always having problems. Have had the extender for a week now, always 4 bars, no dropped calls. My thanks to Verizon.