13 of 26Image
#12 It supports near field communications (NFC)
NFC was supposed to be the gateway drug to easier credit card payments, but this hasn't happened yet. The carriers are getting in the way (as usual) and some users claim Verizon has disabled Google Wallet.
Even so, you can use NFC for some hacky activities, like triggering Tasker events (more about Tasker later) when placing your phone down on NFC stickers like these made by AndyTags (who explains NFC quite well). There are also a few substitute passbook apps, like the one from Attidomobile pictured above.
While NFC might well be a technology in search of a solution, my Android phone has it and my iPhone didn't.