The lens of the Iphone7plus camera is broken, but the glass is not broken. Is it still under warranty?

The camera protection glass of Apple iPhone 7 Plus is sapphire! Usually when you fall from the second floor, the screen will break and the camera glass will not break! ? How did you do that? Apple should guarantee this kind of thing. If there is no warranty, it is estimated that you will have to pay for it yourself. No Applecare wants 2600, and if there is, it wants 648. It is also possible that there is something wrong with the machine. If you have any questions, please ask me.