1. Dust/moisture/cracked lens/dirt
The problem could occur because the device has either dust/dirt/moisture/a crack on their lens. You can solve the problem by cleaning its lens using a clean cloth.
2. Front/rear camera/cracked lens needs replacement
If the issue is still occurring after cleaning the lens, it is necessary to replace either the front/rear camera or the cracked lens. You can solve the problem by replacing the parts in one of our stores.