the simple answer to ur question is,
ring up the “3″ helpline and ask for one, if you’ve had one before tell them its scratched and they will replace it free…
if not, tell them u want to become a “3″ customer and they will still offer you one, they want ur bussiness!
go for it …………… polly

keep checking the o2 website. there are usually free sims every now and again. and they advertise it loads. you can usually order up to three at a time.
Update : if u go to www.yahoo.co.uk there seems to be a promotion going on now…

i’m getting an lg 970 shine phone free with my contract, but my old samsung e720 is all i need. will i get in any trouble with orange if i sell the lg and put the sim card in my old samsung?

will i have to add a data plan?

Where is the cheapest shop to buy them? How much are they in O2 retail shops?
I don’t want to top it up yet so i don’t want to buy one with credit on it?

Many UK mobile networks offer free pay as you go SIM cards. I’m visiting the US soon and was wandering if any American mobile companies do this. A web link would be ideal?!

Atm im on a O2 sim card, On a sony ericson phone. I get 300 free texts every time i top up, I need a pay as you go. One. I need to find one that gives me a certain amount of hours or somthing of free phone calls to other mobiles, The person im phoning is on O2. Any one know any good sim cards That match what i need, In UK?

you can’t, but go to the store and get a free sim card.

how can i unlock a cingular razr so i(a t-mobile user) can use it.

Can someone explain the concept of sim cards? Why are some cards free and some are not? What features do you have to look for in deciding which sim card to buy? Are all sim cards compatible with all phones?
Thanks