The Apple iPad Air 2 might not be chock-full of surprises, but the little surprises it has are quite pleasant. The only one you probably didn't hear much about is that the Wi-Fi + Cellular version will sell with a special Apple-branded SIM card. What's so special about it? Well, it gives US and UK customers carrier freedom! Since the cellular iPad is not sold with your typical two-year contract, its owners could juggle multiple cellular data accounts from a single menu in the tablet's settings.