Specific operation steps:

1.After the iPhone 6s Plus phone is unlocked, open the settings under the main screen page.

2. Enter the setting options list of the setting center, and select Open Control Center.

3. Enter the detailed page of the control center and open the custom control.

4. In the menu bar tool list of the custom control, you can select any tool to add, such as screen recording function.

5. Successfully added the screen recording function to the drop-down menu on the iphone 6s plus.

6. Press and hold the screen edge of iphone 6s plus for gesture operation, and then bring up the drop-down menu. After the screen recording tool is successfully added to the menu, you can complete the operation of the setting menu of iphone 6s plus.