this post was submitted on 01 Jan 2025
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What is this thing?

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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).

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[–] pearsaltchocolatebar 22 points 1 week ago (1 children)

Charging coils can absolutely be rectangular.

[–] ColeSloth@discuss.tchncs.de 8 points 1 week ago

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.