Galaxy J3 Wifi calling disappeared Uncategorized March 26, 2021 Forums AndroidCentralLeave a Comment on Galaxy J3 Wifi calling disappeared I changed from ATT to Tmobile. Everything went well until I discovered that my Wifi calling icon had gone away. It will come back when I put the old ATT sim back. There is no problem on DW’s A11 and mine still fails with her sim. What am I missing? Sharing is caring!