Dust under lens camera test?

[entraik]

Well I had my phone replaced and everything was perfect until I noticed a spec of dust under the lower lens on the back. Only noticed it under intense light. Is there a way to see where it would visually affect a image. What lens is the lower lens. I’m not about to get my phone replaced if it doesn’t affect photo quality.

 

[SkottDMD]

Even high end lenses have dust, debris, etc., behind the lens, it's fairly common. In general, minor scratches and small particles of dust/debris aren't going to make a difference to quality and will not likely be visible in photos. Taking a pictures of solid colors may be a way to test if you wanted to.