Why hasn't Apple's mobile phone information been read?

1. Although the Apple system looks complicated, its internal structure is extremely tight. When I was checking the iPhone, I suddenly found a program error, which was caused by the incompatibility between the latest version of iOS system and the current iPhone model.

2. In the process of use, due to operational errors, some data were mistakenly deleted by the mobile phone system. Although it can be restored, there is no clue on the surface.