Factory reset doesn’t delete persistent app data enabled by app developer [paraphrased]
What about Erase All Content and Settings? You seriously can’t fully erase a second-hand phone you bought?! That’s insane
What’s even worse is that Apple is not fully erasing the phones that they refurbish.
Apple urges developers to not use DeviceCheck for anything beyond basic device verification, and if you’re a developer that’s also misusing it, then you should definitely cease that—there are probably more reliable ways to check whether it’s the same user trying to access an account from a device or not.
I don’t think I care about not being able to erase the device ID. It seems useful to have this, actually, for back-tracing if need be.
Snapchat probs shouldn’t use the DeviceCheck services improperly. But hey, that’s just like my opinion, man.
More, not very interesting, info on DeviceCheck services here: https://developer.apple.com/documentation/devicecheck
I can’t see what was posted above anymore, but the DeviceCheck API lets app developers store 2 binary digits (that means 4 different states: 00, 01, 10 or 11) per device on Apple’s servers. So, no, these don’t get erased during a Factory Reset as they’re stored on Apple’s servers. But your phone will.
