Manual testing is crucial. And therefore, reducing friction to let you start your testing process can be a huge help. Selecting some accessibility shortcuts will do that, putting most of iOS' accessibility features at a triple-click of a button.

Go to Settings, Accessibility, scroll to the bottom, and tap Accessibility Shortcut. Select the accessibility features you'd like in the accessibility shortcuts menu. VoiceOver, Switch Control, and Voice Control are selected in the example. Now triple-clicking the side button on your iPhone (or the home button if you still have one) will show an action sheet with the features selected previously.