The JerryRigEverything durability test showed that the Samsung Galaxy Z Flip scratches like plastic - so where's the glass? Zack's complete teardown found it - it's a layer underneath the plastic protective cover. Peeling off the plastic seriously damages the screen though and even causes the glass layer to crack. So, scratch resistance is not among the advantages of using Ultra Thin Glass, you still need to be careful when using the phone. Samsung did improve on another weak point of foldable designs - the hinge. The Hideaway Hinge has a completely new design. You can see the gears and...
Source: https://www.gsmarena.com/samsung_galaxy_z_flip_teardown_finds_the_glass_beneath_a_protective_plastic_layer-news-41605.php
