How to create a custom gesture? 3uTools has 2 methods for you as below.

First Method:

1.Open "Settings", find "General", click "Accessibility".

2.Tap "AssistiveTouch" and turn it on. Then you can see it an lockscreen.

3. At this interface, you can "Create New Gesture".

4. Creat a gesture and save it, now you can back to Lock Screen and try it.

Second Method:

If you already have "AssisitiveTouch" on your iPhone.

1.Tap"AssisitiveTouch" directly.

2.Click "Custom" ,and then add a new gesture in setting page.

3uTools thinks the function is just for fun or maybe some users can use it in special game applications.