So I tried this and it didn't work either. I am super confused what this could be caused by.
Thanks for your reply.
@Ihanrath What messaging app are you using, or is it just the one that came with the phone?
I am using microsoft. You are the first person that thought of it being the app so I looked up reviews of this app and noticed similar problems. Do you have a suggestion for a better one?
I see that Messenger SMS & MMS is higher rated. Do you know anything about that one?
@Ihanrath search for Google messages app under Google LLC
what is the make and model of the device?
It is a Q6 Android LG phone. Has never given me any problems til a month ago.
what are the providers of the 3 contacts you can't message?
did you reset your network settings?
You also asked about the providers of the three contacts in question. Funny two of them are with Public Mobile and third with Bell but they all have an older model iPhone.
@Ihanrath hmmm.. maybe an update on their iPhones changed a setting and is preventing them from messaging you. its most likely an issue on their end.
are you the only android user in the group? can they text to other Android users?
contact customer support mods to reset your sim network on their end
make sure to check your inbox(top right corner envelope icon) periodically, for a response