To turn off the Do Not Disturb mode on your iPhone, you can follow these steps:
1. Swipe down from the top-right corner of your iPhone's screen to open the Control Center.
2. Look for the moon icon, which represents the Do Not Disturb mode.
3. Tap on the moon icon to turn it off. The icon should no longer be highlighted, indicating that the mode is turned off.
Alternatively, you can also go to the Settings app on your iPhone, select the "Do Not Disturb" option, and toggle the switch to the left to turn off the mode. This method also allows you to customize your Do Not Disturb settings, such as adding certain contacts to your "Allow Calls From" list or scheduling the mode to activate automatically during specific times.