Just hear those sleigh bellsringing and jing ting tingaling tooCome on its lovely weather foran iPhone purchase for you!Christmas is sneaking up this year and you better be prepared. The iPhone 4S is still in short supply at all three of the US’ wireless carriers. Verizon is suffering the worst with immediate shipping only available on two variations. Your best bet, that is if you need an iPhone as soon as possible, is ironically at the iPhone’s original carrier: AT&T. Good ol’ reliable seemingly has the best on-hand inventory of Apple’s latest smartphone.