Unbeknown to many, Vodafone has a "secret" iPhone tariff that allows their users to get the absolute best value out of its network; that tariff is not available as a iPhone tariff but yet, it could offer you more value for your money.
Some eagle-eyed user might have noticed that Vodafone doesn't sell the iPhone on PAYG - nor have they announced that they would do it anytime soon. But you can always buy your iPhone from O2 for £342.54 and get it unlocked for £14.69 - that's a total of £357.23.
Then head for Vodafone's SIM-only plans which start at £10 per month; their most interesting package is the £20, one year contract which provides with 900 minutes, unlimited texts, 500MB worth of data transfer and webmail.
At £480 over two years, it is an excellent deal giving you a total cost of ownership of only £34.88 per month; it gives you 50 percent more calling time compared to Vodafone's similar--priced iPhone tariff and slashes the contract duration from two years to one year.
On the other hand though, you will need to fork out the initial £357.23 outlay from the beginning and live with the fact that it has half the data transfer quota and no WiFi; Ouch! Clearly, not one to suit every pockets.
Even more tempting is the £25 per month deal which, using the same process, gives 1200 minutes, unlimited landline calls, unlimited texts and 500MB worth of data transfer and webmail for a total cost of ownership of £39.88.
That's £5 less every month compared to Vodafone's comparable tariff, a total saving of more than £120 over the two year duration of the contract.
The SIM only PAYG Vodafone offer is very tempting, so much so that Vodafone is bound to sell a PAYG version of the phone fairly soon, one which could bring down the cost of the above scenarios even more. But don't expect others to stand still; O2 has already managed to come up with some interesting cards.