You had this topic come up in Dec. 2018, but the thread is now closed. Just tonight someone told me that my text messages were looking weird and basically incomprehensible, with lots of @ symbols between the letters. (She sent me a screen shot.) Looking at my screen, I noticed an MM symbol in the upper left. The corresponding message says “MM Phone Services, SIM not allowed. Emergency calls only.”
I tried making a non-emergency phone call, and found that I CAN, at least for the moment, make a phone call. But the texting is ■■■■■■■ up, and the MM notification is still there. Unlike in the previous thread, rebooting my phone does NOT change the situation.
Can anyone tell me what’s going on? My phone, by the way, is a Moto G5 Plus.