Where is their a random black dot on my camera

So when i take a picture their will be a black dot and when i take one of myself their will be one on my fave. It is really annyoing and i don't know what it is or how to het rid of it. I bought an iphone repair kit to open my back to clean the lens but that didn't work. If anyone can help me i would really approciate it! If you need to see what i'm talkig about email me and ill send you a picture.

Should be into a small impurities in the lens of the lens within the group, one or two impurities lens. According to the imaging principle, does not appear in the photo, the impact of the clarity of the photo is also minimal. Can remove the lens, looking for a clean slate, or take the lens to a well-lit place, and then look up the aperture open before and after, I thought things viewfinder, but things should be from the viewfinder to the viewfinder outside to see. So excluded. Later, remove the lens from the camera body, found the back of the lens, with blowing look like.

In the first place it's well known world wide that cell phone cameras, if you can call them that, are junk and prone to all kinds of problems.

I'd suggest if you want to take real pictures you buy a real camera and trash that apple junk.