How to turn on Apple's mobile phone?

Apple's mobile phone iOS system has two volume settings, namely ringtone volume and multimedia volume.

1, the ringtone volume mainly controls the ringtone of the mobile phone and the notification ringtone. Now, the user can set the ringtone volume to the appropriate volume by pressing the volume button on the side.

2. Multimedia volume mainly controls the sound output of games, videos and music.

You may not want the ringtone volume of the device to decrease because you accidentally press the volume button. Or sometimes you want the volume button to only control the volume of multimedia. If so, you just need to go to Settings → Sound, turn off the "Adjust with Button" switch, and slide the volume slider to the appropriate volume.