iphone simcard help

[johnnyw8]

hi people, i currently on the o2 sim only contract and have bin for about 2 years now and i will be purchasing an iphone soon. now i was wondering that because the sim i have atm os old would it b a 3g data simcard and suitable for the iphone. if now where could i buy 1 of these sim cards from. is there anyway i could find out weather or not the sim would work in a iphone?

thanks alot john

 

[pelicanflip]

That was a bit rough to read.

Check to see if your sim card is a 3G or not, it says so right on it...

If not, you can always buy one off of eBay.