The Phantom PIN method of Apple's mobile phone is to open Settings-General Tools, and you can use it by opening the PIN.

IPhone includes media playback function of iPod, improved MacOSX operating system (iOS) for mobile devices and an 8 megapixel camera.

In addition, the device has a built-in gravity sensor, and the iphone has a three-axis gyroscope (three-axis gravity sensor), which can automatically adjust the screen display direction according to the user's horizontal or vertical grip mode. And the built-in light sensor supports adjusting the screen brightness according to the current light intensity. There is also a built-in distance sensor to prevent the operation caused by the ear touching the screen by mistake when answering the phone.