[Ferral]

You can do it but it is really expensive. Its been a long time since I have done this however and not sure if the phone itself has a modem built into it. At the min there is a good chance that traffic is being blocked by O2 due to it being expensive to do. You would need to speak to their customer services about it.

If the phone doesn't have a modem you have to buy the relevant lead with the modem built into it, it will also come with the needed software. Thing is though not sure whether you can still get these leads.

Only other thing I can suggest is getting a USB dongle, Vodafone have a Payg variation instead of a contract. You pay for the modem and setup a direct debit which is £20 per month and get 3GB usage per month. Then when you get everything sorted you can just stop the direct debit. At least this way you will have a backup there for the future incase it happens again and you can just reactivate it.