The same problem affects your headphone jack, so if you're having connection issues up in there, try the same thing. It's entirely possible that your problems are much more complicated and this won't do a damned thing, but you'd be silly not to give it a go. It's one of the first things an Apple Genius will try, anyway.
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Joe McGauley is a senior writer for Thrillist. Based on his circumstantial evidence, his pockets are pretty linty.