[X-Istence]

Because blue means iMessage and iMessage means E2EE.

Grey and Green means not encrypted. Simple.

[kbf]

Green means cellular, blue means internet. This same color distinction is used in other places in the UI, such as control center and settings.

[snowwrestler]

Nope, it means SMS vs iMessage specifically.

> If you see a green message bubble instead of a blue one, then that message was sent using MMS/SMS instead of iMessage.

https://support.apple.com/en-us/105087

> iMessages are texts, photos, or videos that you send to another iPhone, iPad, iPod touch, or Mac over Wi-Fi or cellular-data networks. These messages are always encrypted and appear in blue text bubbles.

https://support.apple.com/en-us/HT207006

[mappu]

MMS is email-style MIME messages retrieved over HTTP on a data connection. Push notifications for MMS are delivered as a special SMS, but otherwise it's far far closer to internet than cellular, and it's green.

[vitorgrs]

Years ago iMessage was not E2EE and it was already blue...

[danaris]

That's your own interpretation of it.

You could say "blue means it supports link embedding; green means it doesn't" and it would be just as true.

Personally, I strongly suspect that Apple views it as "blue means Apple; green means NIH."

[criddell]

Gray is encrypted to Apple, and then the information is (of course) shared with third parties. Would you consider that to be a private communication? Kind of. It's a gray area...

[nielsbot]

C'mon...