iPhone X What's this?

Fusionskies

macrumors regular
Original poster
Apr 30, 2015
105
74
United Kingdom
Hi all, got my iPhone XS the other day and I am loving it, but I was cleaning my phone last night and noticed this.

What exactly is it? I've never seen it before on any iPhone in the past, I thought the proximity sensor was the whole bar above the speaker, but this seems separate?

Not saying there's anything wrong with my phone, just curious. Coming from an iPhone 8, its just a little black dot, but I do understand there are more sensors in the X.

Cheers.
 

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Diorama

macrumors 6502a
Oct 6, 2017
626
918
I can’t test mine until I get home and can shine a bright LED at it.
Maybe a proximity sensor requires a transmitter and a sensor?
 
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