I expect they will yes, but they might do this gradually, eg release a new screen assembly that is not compatible with the existing edge trim.

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From internals they already have this with the AMD upgrade requiring you to update other internal parts. like wifi etc

From the EU perspective iMessage does not even qualify as having enough regular users

It will be a lot of work to go correctly without leaking user info

Given a large part of the GSMA are gov agencies or carriers that are under gov pressure and subject to well established wire tapping requirements I would be very surprised if encryption is adopted. It was proposed during the original spec and refused and again more recently refused.

so you saying the maker must open source all the software and IP and internal deisnges of every chip not to mention provide the tooling and rigs they used to make them for free to any factory that wants to make rip offs?

The CA law explicitly does not require third party repair to be certified and does not permit setting of rates

Apple are happily with thus law as it applies to everyone and due to thier vertical integration and small number of products screws it will cost them a lot less than competitors. In effect for apple the CA right to repair law benefits them more than it hurts them.