https://wccftech.com/iphone-x-cracked-camera-lens/

Lately, Apple support forums and Reddit threads are rife with complaints of iPhone X cracked camera lenses. To the irk of the already disgruntled users, Apple is refusing to replace the smartphone under warranty and asking them for the full amount replacing their device.

Camera lenses usually crack after a device has been dropped, but in this instance, most users claim that the device never fell down. Some users think that the cracking lenses can be a result of the dropping temperature. One user complained that he noticed a crack on the rear camera glass (via 9to5Mac) of his iPhone X that he bought before Christmas. He took it to the Apple Store, where he was asked to pay $549 just to get the lens fixed. That is $20 more than the price of the OnePlus 6 base version.