Iphone XR not receiving group texts when on WiFi, after switching from AT&T
Hi all. Posting to help others after spending weeks debugging this problem. I recently ported my parents' iPhones from AT&T to T-mobile Connect. My mom's phone worked fine. My dad's phone mysteriously stopped receiving our family group text messages. Further testing revealed the problem only occurred when the phone was connected to WiFi. And specifically, only when my sister or her husband (Android users on AT&T) were included in the group message, either as senders or recipients. I went through exhaustive testing with T-mobile tech support (many times with many agents), checking all the settings, etc. and even brought the phone back to factory settings at the Apple Store genius bar. No luck. Went to a T-mobile store and replaced the sim card. Still no luck. I then spent a long, dark night of the soul pouring through forums when I came across a couple of tidbits in forums for other carriers. After playing with the following two settings, a miracle occurred and the phone finally works after weeks of frustration. 1). Log into the T-mobile site, click "My T-mobile" at the top, choose "My Profile" and toggle all of the Blocking Controls and Family Controls, on and off again, waiting a few minutes with them on before leaving them all turned off. (I did this a few times.). 2). On the iPhone, go to Settings->Cellular and turn off "Wi-Fi Assist." It's waaaay near the bottom - scroll down below the giant list of apps. (Note that on my own Iphone, that setting is found in Settings->Mobile Data) Reboot. I can't say which of the above solved the problem or if the universe finally took pity on me. But the problem seems to have disappeared. Here is one last thing to try. When a phone is ported from one carrier to another, apparently it's possible for the profile to not be completely released from the former carrier. I called AT&T last night and the agent was confident based on my description that the profile was not properly released. That turned out to not be the case, but it's something to try. Also, that agent gets credited for the "Wi-Fi Assist" suggestion above. (Thanks!) Good luck!
Group MMS glitch
So this is an extremely odd occurrence but yesterday my Dad(galaxy j7)sent a group text to my wife(galaxy s10) and I(galaxy s10) wishing us a Happy Anniversary. Well when my wife responded the group message disappeared and it only showed as a conversation between myself and her. Now the weird part is after that anytime I text my wife or she texts me my Dad receives the message as well.We have disabled group messaging, cleared the message app cache, reset app preferences, and deleted each other as contacts. I've exhausted hours with tech support from Samsung and T-Mobile to no avail. We still are not saved as contacts in each others phones and deleted all messages between us yet still when I text my wife or she texts me somehow my dad receives it as well. All three of us have T-Mobile for a carrier but 2 different plans. I am hoping something similar has happened to someone else and can help us out.