I don't get a strong Sprint voice signal at my home, and particularly not in the basement. Even when a call is connected, the sound quality is not great. I set up WiFi Calling and connected it to my home WiFi signal, and the call quality is excellent. What a great feature for anyone who lives in a poor signal area -- yeah, I know, Sprint customers! I'm now also able to send text messages from my basement (it used to be that often they would not send, and I'd have to go upstairs to send them).