Apple 6 p photos are blurred. What happened?

Apple 6P photography, photography becomes very blurred, can't see clearly, and the focus is blurred. Reasons:

1. The light is blurred. It is suggested to change the angle, choose the angle with good light or turn on the flash.

There are stolen goods in the lens, so just clean the lens.

3. The lens is blurred because of scratches, but the sapphire lens of 6 will not be scratched unless it is a very sharp object.

This situation can only be repaired.