Sudden inability to roam on T-Mobiile using a Wind Mobile Samsung Galaxy S5
Problem: As title. What doesn't work: Going to Settings / More networks / Mobile networks / Network operators and Re-scanning Trying to connect manually to T-Mobile Setting to manual selection, then back to automatic selection Going to the Wind SIM toolkit and trying anything there Rebooting Shutting down for some arbitrary interval (i.e. 30 seconds) then restarting Removing and replacing the SIM and restarting Having Wind turn USA roaming off and on again What may work: Changing "Settings / More networks / Mobile networks / Network mode" from "WCDMA/GSM (auto connect)" to "GSM only", re-scanning available networks, and manually connecting to T-Mobile. No idea why this would work, but it did. It might even stay connected if you then return "Network mode" to "WCDMA/GSM (auto connect). But I don't know if the original connection problem will re-occur the next time with this setting, or not.