Watch the Samsung Galaxy Z Fold 4 as it’s assembled and tested - The Verge

1. Watch the Samsung Galaxy Z Fold 4 as it’s assembled and tested  The Verge
2. Did Samsung fail at foldable phones?  Android Authority
3. Watch Samsung Stress Test Its Foldables In This Video  Review Geek
4. Samsung reveals the rigorous tests its foldable phones go through - GSMArena.com news  GSMArena.com
5. Samsung showcases the assembly line testing process for its foldables  XDA Developers