My new phone’s headset

So a couple weeks ago I bought a used iPhone from one of my friends who wanted to get one of the new twice as fast, half the price, and ten times the hype version. I unlocked the phone on the 2.0.1 framework using WinPwn so I could connect on the local Bell network instead of an overpriced ATT contract and everything works great except once in a while it will get stuck in headset mode because pocket lint debris in the headset jack. I’ve found the best way to fix it is to run the headphone jack in and out a few times. Seems to me that the problem is partially due to the software though, I can’t imagine that my pockets produce more lint than other iPhone owners, so maybe Apple will address the issue at some point. Until then I guess I need to buy some canned air or a lint brush.