I recently bought a used LG G2 (T-mobile) from market and later on noticed that it does not takes the photos with expected quality.
I feel that the issue could be possibly because of scratches on Camera lens (coating). I searched on internet and found that we can remove scratches by using toothpaste (with toothbrush?) or some polish. But that solution is particular to removing scratches from lens glass. In my case I see the yellowish coating.
Please suggest How I can get rid of this issue.
The standard first rule of cleaning optics is: Don't!
Cleaning with an abrasive like toothpaste is far more likely to render the lens evenly "milky" due to putting fine scratches all over it. Further, the "lens" you can touch is actually an optical flat cover that protects the actual lens, and in many phones and tablets it's made of synthetic sapphire -- so the only thing likely to be scratched, or vulnerable to your polishing attempts (short of using powdered diamond on an optical lap) is the coating.
It's unlikely that any photo quality issues you may see are due to individual scratches on the cover, in any case; it's far more likely that the focusing mechanism (probably a piezoelectric unit behind the sensor chip) is malfunctioning, a setting in the camera software is wrong, or there's junk on the sensor itself.
TL:DR; you're more likely to make it worse than better if you try to polish the lens cover.
If it is a new mobile and you recently bought it, I suggest you to take it to the service center. Any stunt you may pull may result in breaking your warranty or guarantee. If the guarantee/ warranty period is over, then what you've heard is an acceptable method to clean camera lenses. Toothpaste can be used. But be careful to follow the correct steps. Try this link. However, I advice you not to go ahead with it unless you are certain and very confident. Any actions you perform is strictly under your own responsibility and nobody else will take liability for your actions. So be very careful. Cheers
