Already available from O2, Orange and even Tesco Mobile, the UK’s third largest carrier, Vodafone, finally announced this morning that it will begin selling the ubiquitous Apple smartphone on January 14th. Vodafone subs will be able to snag either the iPhone 3G or the iPhone 3GS for free on all tariffs over £35 and £45 respectively. Both of these prices assume a 24-month contract, but an extra £5 will shave off 6 months. Anyone interested in tethering should pencil an extra £5 into their monthly budget as that’s what Vodafone says will buy you the right to 500MB of data for tethering. One must pay to play, we suppose.