Title says it all: I'm on an iPhone 6S with T-Mobile, and my friend has an HTC Droid with AT&T (don't remember the exact phone he has). When I am in a group message with him I cannot receive any of his text messages (him being the only Droid in the group). But when I just text him, everything works great. Anyone have any ideas why I can't receive his texts in a group? I have SMS messaging enabled, because I text a lot of people who don't have iPhones.