Since the recent update on my Note20 Ultra 4/15/21, I have been unable to send or receive MMS messages. Also, I am unable to get any group texts, SMS or MMS. NONE of the fixes posted in any forum, any websites, nowhere....work. The opinion is it is a Samsung problem. I cannot do my job without these functions and would appreciate SOMEBODY come up with a solution!!!
Again, only works for people on the AT&T network.
Good luck everyone. Such a frustrating issue.