Imagine my surprise when examining my Carhartt dungarees, and finding that an iPhone pocket already existed but had been "crippled" by Carhartt into just a coin pocket.
I felt like the first guy who overclocked his CPU or the iPhoneIslam guys who have discovered how to turn a 3G iPad into a giant iPhone (which, by the way, will not fit in very many jeans pockets).
Anyway, this unlock is much easier than an overclock, you don't need to sew (or program), and it only takes a couple of minutes max.
Step 1: Find the Secret Stitches
When you turn the dungarees inside-out, the coloured stitches are obvious against the white pocket fabric. You can also see the potential size of the unlocked iPhone pocket.