Signal strength obviously depends on location and either carrier will have issues in one place and not in another. Having said that, I was having major problems with reception in my apartment when with Verizon. I had, consistently, zero signal and wasn't even able to make emergency calls. Building construction plays a part, but I object to having to walk outside in the rain to make phone calls. When I went camping with friends in the Poconos last Summer, I had no signal, yet others with AT&T phones had no problem. That's when I decided to jump ship...even gave up my grandfathered unlimited data to do so.