I have a Galaxy Note 5, and use Verizon Messages.
I currently have the "Send Read Receipts" unchecked, but I don't know if it being unchecked means others can't see that I've read their message? I just don't like it when others can see that I have read their message, because sometimes I take awhile to reply and I don't want them to get the wrong idea as to why I've read it but don't respond for awhile.