Afternoon guys, I've booked an appointment at my local Genius Bar tomorrow afternoon because the lock button on my iPhone 5 has become extremely temperamental. Overall the phone has been great, but over the last couple of weeks the lock button only seems to work around 10% of the time. I'm left repeatedly pressing it for a good minute or so before it decides to finally lock itself. So, should I expect a straight swap for a new phone when I take it into the store tomorrow? I got it on launch day from a carrier store but I know that after a 14 day period any problems should be taken up with the Apple Store. Anybody foresee any problems with this? I'm anticipating a fairly smooth transaction as clearly the phone has developed this problem through not fault of my own.