Even if this takes off in some way, the most meaningful result for an end-user would still be to recreate the experience on Android, instead of trying to keep iOS running on foreign hardware.
Reason: Android is a OS designed to run on as much hardware as possible, iOS is designed to support only a VERY limited set of components, and is increasingly wrapped into a per-component security architecture.
I'm saying the hobbyist community for phones is massive - this is not for regular phone users. And they all have older (but fast enough) phones lying around to try something like this on.
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