Good morning, jw1578!
Welcome to our Support Community! Are these the APN settings that you have set-up BYOD T-Mobile data & APN settings ? Are you able to receive group messages on your S7 Edge? Do you only have issues with group messaging (data and calls are working fine)? Lastly, are you able to test your SIM in a known working device to see if you're able to send/receive group texts?
Hi there! Just wanted to see if you'd had a chance to look over the BYOD set up guide Amanda recommended! If you've already input those settings and are still having trouble, can you let us know a few more details? Thanks!
Hey, jw1578! Just wanted to check in here again and see how things were going with your phone. I know Amanda shared a helpful link previously -- I wanted to actually make sure to pass this thread your way: Fixed Galaxy S7 APN issue. It offers some helpful steps for deleting the existing APNs before updating them; and a lot of folks have found it useful over the past several months! I know it's for an S7 Active, and you have an S7 Edge; but hopefully there's something in there that helps. Please let us know if you're still having trouble. Thank you!