Brought over my unlocked s6 that was on Verizon and everything works fine on the t-mobile network except for MMS. Can't participate in group messages or send pictures over text. Have tried 3rd party texting apps like textra and Messenger but did not do anything to resolve
Best answer by tmo_mike_c
Ah, okay well thanks for testing that out anyway. I really think you've done all you can. Sometimes it can be hit or miss with Non-T-Mobile phones. If by chance you are able to test it in a T-Mobile branded phone, and it works it's definitely something going on with the other device.