App Interface Guideline: Touch — Gesture Conflicts. Keywords: scroll swipe back gesture. Platform: iOS/Android/React Native. Description: Custom gestures must not break system scroll/back. Do: Reserve horizontal swipes for carousels. Don't: Full-screen custom swipe conflicting with back. Good Example: HorizontalPager inside vertical ScrollView. Bad Example: PanResponder on full screen blocking back. Severity: High.