Just months after launching the I.D. case for the iPhone 3G / 3GS, BlackBerry Curve 8300, 8520, 8900, BlackBerry Tour 9630 and BlackBerry Storm2 9550 owners can now ditch their wallet and use the Case-Mate ID case as a minimalist wallet. The ID Credit Card Case is my favorite wallet case for the iPhone. It’s a semi-flexible hard case with a built-in slot on the back that can hold a few cards. It’s available in several colors and can be purchased for $29.99.