How to turn off the mute mode of Apple's mobile phone's Do Not Disturb mode?

The Do Not Disturb mode of Apple's mobile phone has nothing to do with the mute mode, which restricts incoming calls and messages, and the mute mode means that the phone turns off the sound.

Here, taking the iPhone 6 mobile phone as an example, the specific method to turn off the mute mode is as follows:

First, find the "Settings" icon on the mobile phone desktop and click to enter, as shown in the figure.

2. After entering the setting interface of the mobile phone, drop down the menu and select the "Sound" option, as shown in the figure below.

3. After entering the sound interface, slide the slider in the red box below to the right to turn off the mute mode, as shown in the figure below.