Verizon 256GB SG here, first November 3rd shipment. I am to suffering from the speaker crackle. I've read that some 8's were having a similar issue out of the ear piece speaker and Apple acknowledged it and pushed out 11.0.2 for the 8's.
Have we had an official announcement for the X's?
It's so bad, that mine will crackle even before it hits 50%.
Part of me thinks its a hardware issue / design flaw and the other thinks its a iOS problem.
I suspect design flaw as well. Half baked product with poor speaker component choice that found its way in this tiny notch filled with other components prone to resonating nearby. I bet you the next iteration of the iPhone X will have a bigger slit at the top to let more air out, therefore reducing rattling/crackling. All iPhone X I have tested exhibit the problem--I'm taking 30+ units here, 4 of which I owned and returned as it was unbearable. Back to iPhone 7+ until they've redesigned it slightly next year.
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Thanks for your input, I am not sure if I should wait for the next update or return/exchange the iPhone X and risk getting one with the same issues or worse...
I am starting to think it is software related because I had the metallic sound through the earpiece yesterday during a couple of calls and there seems to be a pattern to it. If the phone sits for a while unused the first received or dialed call has the metallic sound to it, in fact it happened when I called my mother and as soon as I hung up and called her back it stopped with metallic noise. Happened a second time later in the day and same thing, hung up and called back and noise is gone, WTF???
I'd just return yours and wait until they've fixed the design flaw. I do not believe this is software--it would have been otherwise addressed publicly by Apple after it made headlines a week ago. They cannot go about telling the public 'oh yes, we made a speaker grille that's too small therefore the speaker will rattle at high levels.'