If it is an Android phone, it can be redrawn into other versions of the Android system. But you can't switch to the IOS system of Apple phones.

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Android is a free and open source operating system based on Linux, which is mainly used for mobile devices, such as smart phones and tablets. It was led and developed by Google and open handset alliance.

IOS

IOS is a mobile operating system developed by Apple. Apple announced this system for the first time at Macworld conference on June 9, 2007. Originally designed for iPhone, it was later applied to iPod touch, iPad, Apple TV and other products.

operating system

IOS, like apple's Mac OS X operating system, belongs to a commercial operating system similar to Unix. Android operating system was originally developed by andy rubin, which mainly supports mobile phones.