Sister was messing around with a UV light and noticed this on her phone screen under it. My phone does not have this (all I get is a grid of dots I'm pretty sure are to do with the touch screen).
this post was submitted on 01 Jan 2025
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What is this thing?
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That wouldn't be behind the screen nor rectangular
Charging coils can absolutely be rectangular.
They can't be behind the battery, though, so this can't be it.
They also can't be that long and still work with any efficiency.
Oh, I thought that OP was asking for the circular shape, the rectangular one looks more like some short of graphic showing on the screen. But maybe the circle is just the reflection of the flashlight?
Yes, the circle is light from a light source...