topstan, Jun 7, 2019 : Ever since I got my OnePlus 7 Pro, I have had a problem where I lose WiFi Calling. I am on T-Mobile and used WiFi Calling on my previous OnePlus 5. I get no network signal at my house and have to use WiFi. I have it set up and it works, but a couple of times a day, WiFi calling just goes away. The WiFi is working and I have internet, but no WiFi Calling. The only thing I have found that will bring it back is a hard reset. If anyone has seen this problem and has a possible solution, I would love to hear it. I never saw this problem on the OnePlus 5.