I recently switched from an iPhone to Android. 1:1 messages are working fine, but group messages are being sent into a black hole. I'm hoping that someone here may know of a fix. I deactivated iMessage using both the device settings and Apple's support site. I also (annoyingly) had to SMS everyone I know who has an iPhone, asking them to delete our existing conversation thread so that their phone would correctly start using SMS for our conversations. Where I'm stuck is group messaging. It appears that anyone with an existing group conversation that I was part of is still "stuck" in iMessage -- i.e., it should have reverted to MMS for a group chat, since I'm no longer on iOS. But, the messages are still being sent as iMessage, and the senders have no idea that I'm not receiving them. (I know that I'm not receiving them because my partner's iPhone receives these group iMessages, and I'm still listed as a recipient) I've heard that the iMessage servers "time out" after 30-45 days and will fall back to SMS/MMS for a recipient if their iOS device hasn't revalidated iMessage in the background....Don't know if this is true. That would still be frustrating, but at least I'd know that I'll eventually start receiving messages again. Do any other iOS --> Android switchers have any idea what I can do?