Go to Settings.
Go to General.
Go to Accessibility.
Go to AssistiveTouch.
Turn on AssistiveTouch by swiping that button next to the word AssistiveTouch
And you will have the Assistive Touch on. There will be a button in a few seconds and press it.
It helps with you if you don't want to do it the way it is normally is, so it will help you a lot but sometimes annoying when you are playing games.
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