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Thank you all for the advice. It was an I phone 3 so I did not need to cut the Simm Card. It almost a straight swop, I had unlimited internet access on the Nokia so the cost element was not an issue, but accessing the internet from iphone was. A quick call to O2 who said a slight tweak which he could do from his end was required to use the simm in the Iphone. One hour later up and running fully functional Iphone. No extra charge, in fact I asked if I could change tariffs to their simpicity charge. Lo and behold £10 + vat a month cheaper. Cheers the help.