I am currently trying out Mint Mobile, and I cannot get a signal to make calls when in my basement, which is where I work. This is critical to my phone service. I have had issues with Sprint service in that location as well. I am currently on Verizon, and I get a great signal with them in my basement. My current phone does not support WiFi calling, which may solve the problem. Is there any other way to improve the signal in my basement? I know that AT&T has microcell towers that solve this problem for AT&T users. I don’t know if similar technology is available for Mint Mobiles users.