Group texts to groups including Android phones not longer sending after iOS 14.1 upgrade?
It looks like there is another post in March that was inactivated on this issue (230+ users that marked "I have this question too"), but it was with a previous iOS. I have a couple of groups that include both iPhone and Android users. No problems until after the latest OS update (14.1). We texted successfully through Halloween. Now every text I attempt to send on either my iPhone Xs, iPad mini or MacBook Pro (Mac OS 10.14.6) advances the progress bar quickly over to about 90-95% then freezes for quite a while before producing the exclamation mark and the "Not Delivered" message. I made no changes in my carrier (AT&T) nor did I make any changes to the Messages settings (iMessage, Text Forwarding, Send as SMS, MMS Messaging and Group Messaging are all still on). Of note, the two other iPhone users (one SE 2nd Gen (14.1) and the other a 1st Gen SE (14.1)) also can now no longer send/receive to that group BUT the Android user is able to do so.
I can message the Android individual directly without issue. Android user claims no changes made to the Android phone.
Anyone else having this problem and/or know solutions? I've tried deleting and starting a new conversation, turning above settings off then back on and restarting my phone in various sequences to no avail. Wasn't hopeful since all all iPhones are having the problem...
Thanks all!
(I've already reviewed the following posts:)
https://support.apple.com/guide/messages/send-group-messages-icht3268ad23/12.0/mac/10.14
https://support.apple.com/en-us/HT202724
Also searched in AT&T forum without success.
iPhone XS, iOS 14