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by geor9e 926 days ago
I'm surprised Apple hasn't cut them off yet. They must not be able to for some legacy reason. I suspect the only way to cut them off would be to cut off all the older phones like iPhone 3GS as well.

>the iMessage protocol and encryption have been reverse engineered by jjtech, a security researcher. Leveraging this research, Beeper Mini implements the iMessage protocol locally within the app. All messages are sent and received by Beeper Mini Android app directly to Apple’s servers. The encryption keys needed to encrypt these messages never leave your phone. Neither Beeper, Apple, nor anyone except the intended recipients can read your messages or attachments. Beeper does not have access to your Apple credentials.

>We built Beeper Mini by analyzing the traffic sent between the native iMessage app and Apple’s servers, and rebuilding our own app that sends the same requests and understands the same responses.

https://blog.beeper.com/p/how-beeper-mini-works