I recently got the Samsung Galaxy S21 Ultra. As soon as I left the store, I received a text (SMS - not any outside app) from Person A - and it showed as a group text between Person A, Person B, and myself.
Person A 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. Person B does not receive Person A's texts, only mine.
We have tried so many different things, with no success
- I have removed Person B from the group, it will show that he's gone, and that I'm only texting Person A and as soon as I hit send, it shows it went to Person B as well.
- I have deleted both contacts from my phone as well as from Google. I have tried texting Person A's number with and without a 1 in front of the area code. Even when they are not contacts on my phone, I will enter Person A's phone number - all seems good, then I hit send - and now Person B's number shows up, too. It seems I can't text Person A alone - I have to include another contact/phone number when texting him. I can remove Person B from the group and add someone else to it, but I can't text Person A alone.
- I have turned off Person A'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.