I have noticed phones with a handset (like the one in the image) have a little cover that resembles something like a cold camera shoe under the bottom of the handset’s top speaker holder. Is there a use for it? It has a line bump in the middle, but it doesn’t go all the way from both sides, it leaves a gap. I have also seem some of them have extra space on the top of the cover, and some don’t.
What in the world is a cold camera shoe?
It’s a slot on a camera that you can use to attach accessories, like a microphone or flash. A hot shoe provides power to the accessory, a cold shoe does not.
Neat!
Ah, OP was just asking about the flash holder for landlines.
Well, see what a hot camera shoe is?
Just Leave it outside for a while, and there you are.
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Its a non-powered version of a hot shoe, both of which are the thing you use to mount an external flash that’s on the top of a lot of (all?) full sized cameras.