Last week Ming-Chi Kuo, a reputable analyst reported that the 5.4" and 6.1" iPhone 12 phones, are facing some issues with the lenses of the ultra-wide camera. The coating of the elements produced by one of the suppliers for the non-Pro models was said to be susceptible to cracking.
Today the maker of the problematic component has gone on record to deny these reports. Genius Electronics is Apple's main camera lens supplier and says that all demands from the clients are met and everything is on schedule.
But even if Genius Electronics is hiding something, Apple is using Largan Precision's services as well so if there are any delays, the latter will compensate. Ultimately, this means that the products shouldn't face further delays.
Glass is glass and glass breaks
It's been a while since Apple used the real sapphire. Was it iPhone 5s? Or even older versions?
IPhone 11 camera lens also breaks. Sapphire glass is just marketing gimmick. They are using regular glass.