Yes, but dust on the outer lens will not affect the final image. Try putting dust on the lens and take a picture, you won't see anything. It's the same with DSLRs, it's common to have dust inside the lens, in particular not tropicalized sealed lens, but they don't matter. Only dust on the sensor on on the back lens is visible. So in case of that in an iPhone, only a total lens module change would fix it, sadly. Examples:
We have a lot of gear in our inventory, which means we also have a lot of broken gear in the middle of repairs. When it comes to lenses, one thing we see a lot in the repair department is front element scratches. And that makes sense, when a lens is mounted, it's the single [...]
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We had a chance to make a pretty fun demonstration today, and here it is. As most of you know, we’re very finicky about our gear. We don’t like even tiny scratches on front elements or dust in a lens (although a bit of that is inevitable). We’re like you. We want the lens to [...]
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