App Interface Guideline: Accessibility — Form Control Labels. Keywords: form input label accessibilityLabel. Platform: iOS/Android/React Native. Description: All inputs must have a visible label and an accessibility label. Do: Pair Text label with input and set accessibilityLabel. Don't: Inputs with placeholder only. Good Example: <View><Text>Email</Text><TextInput accessibilityLabel="Email address" /></View>. Bad Example: <TextInput placeholder="Email" /></View>. Severity: Critical.