But according to the latest news, IOS will usher in a huge change. It will be renamed iPhone OS, just like iPad OS. In fact, when the first iPhone was released, the system at that time was called iPhone OS.
The iPhone is running OSX, Jobs said at the launch of the first iPhone in 2007. When the first iPhone was released, the system was officially named iPhone OS. However, when the first iPad was released in 2010, the iPhone OS was changed to IOS, and it really changed its name to look at the iPad.
Extended reading source: fast tech editor in charge: Xue Jingyu_ NBJS10393