This thread is about a hypothetical situation where Apple allows iMessage on other platforms (such as Android), but only on platforms that can securely attest that they have not been modified.

Yes, I use Android, but would like to also be able to interoperate with iMessage. But I don't want to be stuck in a (for now hypothetical) state where I have to choose between using iMessage and being able to do what I want with my phone.

> We use WhatsApp abroad and SMS at home. The messages are green and I can't tapback. That's it!

SMS has ordering, latency, and delivery issues. You also cannot send media over SMS, and MMS has size limits for media that were set decades ago. Any video you send over MMS will be recompressed to the point where it'll be unwatchable. SMS also does not support group chats. MMS does, but delivery and message ordering issues are even worse there, and group chats are inflexible; for example you can't add new people to an existing group chat, or remove existing people.

I do use WhatsApp, grudgingly, for some people who refuse to switch to something else, but I'd like to reduce my reliance on things owned by Meta/Facebook.

But group chats don't work over SMS. That's a big deal-breaker IMO.

> group chats don't work over SMS

I have multiple group chats running with mixtures of iPhone and Android users.

You're using MMS for those group chats, not SMS.

Yes indeed, and some networks here in Europe don't support MMS anymore.

I'm pretty sure ive had group chat work over SMS in australia, much to my dismay.

It was probably MMS, not SMS. SMS does not support group chat, but MMS does.