When using Voice Control, say: "Show names". You'll see all the accessibility labels for interactive elements overlaid on the screen. It will help you identify labels that can be improved, or actually missing. Labels are not just for VoiceOver.
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VoiceOver has a very cool gesture called the Magic Tap (double tap with two fingers). It should execute the most important task for the current state of the app. Examples: start/stop timer, play/pause music, take a photo, compose a tweet... You just need to override accessibilityPerformMagicTap() to capture that gesture, execute the desired code, and return true if handled successfully. https://developer.apple.com/documentation/objectivec/nsobject-swift.class/accessibilityperformmagictap()
Please, don't use accessibility labels as ids for your UI tests. It can completely ruin the experience for VoiceOver users. There is actually an accessibility identifier property that you can use instead to uniquely identify your UI elements.
Accessibility Labels are not just for VoiceOver, and Accessibility User Input Labels are not just for Voice Control. The latter will also help Full Keyboard Access users to find elements on the screen by different names. Good API design!
