Now I am struggling about giving up my ATT grandfathered unlimited international plan. My big concern is that I don't think TMobile has coverage in Michigan's Upper Peninsula. (I live in lower Michigan -- moved home from Dubai years ago but didn't give up the "handle"). Just bought an Apple XS for the dual SIM capability. Had I known, I would have bought a Pixel 3 and kept Fi on ESIM slot 2 as a backup.