A LiDAR scanner. LiDAR stands for Light Detection and Ranging. It fires out infrared light and then uses that light to build a 3D picture of its surroundings. The iPhone uses the LiDAR scanner to create depth maps for camera tricks such as portrait mode, and to also help speed up autofocus.
Mine was dust on the 3x zoom lens i guess. I followed one person's advise to stand up tall wise on it's own and let it fall flat on its own. The dust disappeared.
Dust Particles on the Sensor
If your black spots appear consistently in the same location, you've probably got dust particles on your sensor. This is a common problem for DSLRs and mirrorless cameras with interchangeable lenses.
The most straightforward technique to clean the black spots on your camera lens is to use a lens cleaning cloth. This probably came with your lens, but if not, they're easy to buy on Amazon.
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It's actually called a LiDAR scanner, which stands for Light Detection and Ranging.
When the black spot is spreading on your phone screen, you need to have the screen replaced. If you try to repair the phone yourself, you may cause more damage to it, thus complicating the issue. Hence, seek the help of professionals.
If you are seeing weird circles on your iPhone 14 Pro Max's screen, it is possible that the circles are caused by dust or fingerprints on the screen. To resolve this issue, you can try cleaning the screen with a soft, dry cloth.
Sensor spots are caused by small pieces of debris sticking to the sensor of your camera. All modern cameras have built-in cleaning systems (usually vibrating the sensor to shake off particles to be caught in a safe reservoir, in the same way as a dog shakes off water), but sometimes that's not enough.
This annoying black spot might result from a manufacturing defect known as a dead or stuck pixel. Dead pixels are caused by a transistor that has stopped functioning correctly. On the other hand, stuck pixels are caused by a transistor stuck in an on or off state.
When removing dirt from your iPhone's front camera, it's best to use a microfiber cloth to clean the lens. According to Apple, if you see debris or dust inside the lens and still need assistance cleaning it out, you can take your iPhone directly to an Apple Retail Store or visit an Authorized Service Provider for help.
Will dead pixels go away? No, dead pixels won't go away on their own – most of the times, they're not even fixable. Before you give up, though, make sure the pixel is really dead and not stuck – because stuck pixels can go away.
Dead pixels usually don't spread. They're usually a small fault in a display. If they do spread, you might need to hire a specialist or replace your screen.
In a dead pixel all subpixels are permanently off, which will make the pixel appear black. This may result from a broken transistor; in rare cases, however, even a black pixel may just be stuck. So if you're seeing a colored or white pixel, your chances are pretty good, and if it's black, there is still hope.
A stuck pixel will generally be of color; red, blue, green, etc. With LCDs they can be unstuck. Not sure that will work for an OLED screen though. A dead pixel is black (like yours) and can not be repaired.
For a DIY project, the average costs for iPhone screen repair, glass repair, and LCD replacement come out to be around $150 – $200. Whereas, at an authorized Apple repair center it starts at $129 for the iPhone 5 and 6, all the way up to $329 for the new iPhone XS Max.
The most reliable way to fix a dead pixel is to replace the screen. Many manufacturers have warranties that cover dead pixels, so check your device's warranty to see if this situation applies to you. Most display manufacturers require a minimum number of dead pixels before the screen can be replaced.
To check for sensor dust, set your camera to Aperture Priority mode, then select a narrow aperture, such as f/16 or f/22. Using a telephoto lens or a zoom lens set to the longest focal length, take a photo against a white wall at the minimum focusing distance from your subject.
Many photographers regularly do their own sensor cleaning without any issues. Yes, there's always the risk of damaging the sensor if done incorrectly, but if you take a few basic precautions and handle your sensor with care, the potential for damage is small.
Avoid touching the sensor or cleaning it too much - because, realistically, it probably won't need it that often. So to be as safe as possible, it's best to start with the auto DSLR sensor cleaning. Most cameras have one and this way you don't need to touch or really do anything.