With AssistiveTouch, you can customize how you navigate your iPhone or iPad by creating your own menu and gestures, which can be helpful if you have limited dexterity or hand strength.
To learn more about this topic, visit the following articles:
Use AssistiveTouch on your iPhone, iPad, or iPod touch: https://apple.co/2rxXR2o
Use AssistiveTouch on iPhone: https://apple.co/2U3h7Gd