Hi all - Asked this in a thread earlier in the week but it got burred...so reposting to find out before I damage my iPhone 6. I have a Verizon iPhone 6 that keeps dropping calls and having coverage issues so thinking about trying out a T-mobile sim that I have. - If I pop the T-mobile sim in am I doing any damage to network settings or otherwise that make the phone work on Verizon usually? - With T-Mobile if I do pre-paid to test the service, does that include their Wifi Calling? Thank you in advance for your help!