AssistiveTouch is a useful accessibility feature, it allows users to perform actions without using hardware buttons. Also, it works as a Shortcut.
If you can’t use hardware buttons, then here’s how you can enable and use AssistiveTouch on iPhone or iPad.
How to activate and use AssistiveTouch on iPhone
First things first, open Settings then head over to Accessibility Settings, tap on Touch > AssistiveTouch, now turn the toggle to On to use it.
Once enabled, you can drag and drop the AssistiveTouch shortcut by holding it, tap on it to perform different actions.
By tapping Customize Top Level Menu option you can change or add new actions if wanted.
If you want to take a screenshot without pressing hardware buttons, you can simply tap AssistiveTouch then Screenshot action. That’s it.