Sorry I'm with snovv_crash here. I can only speak for iphones, but I have never had a 3.5mm jack fail on me, and I used to go through a pair of headphones every 6 months or so.
I have broken one iphone's 3.5mm jack by biking in probably-too-tight pants while listening to something on my headphones, so if you're looking for anecdata, it does happen.
I believe that it happens, I am just saying that I believe the 3.5mm to be the toughest port on the phone in my experience.