I recently got the Samsung Galax S21 Ultra. As soon as I left the store, I received a text (SMS - not any outside app) from my husband - and it showed as a group text between, myself, my husband (Kevin) and our friend Sean. My husband has an iphone. He did not change any settings or do anything different on his phone - he went to our most recent conversation and used that to text me. On his side, it shows he's only texting me. Sean does not receive my husbands texts, only mine when. We have tried so many different things, with no success. I have removed Sean from the group... it will show that he's gone, and that I'm only texting Kevin and as soon as I hit send, it shows it went to Sean as well. I have deleted both contacts from my phone as well as from Google. I have tried texting Kevin's number with and without a 1 in front of the area code. Even when they are not contacts in my phone, I will enter Kevin's phone number - all seems good, then I hit send - and now Sean's number shows up, too. It seems I can't text Kevin alone - I have to include another contact/phone number when texting him. I can remove Sean from the group and add someone else to it, but I can't text Kevin alone. I have turned off Kevin's imessages, and have made sure I'm in his contacts as "mobile" not as "iphone". I feel like I have literally tried everything - besides a factory reset.
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