Is their a difference between sim cards, like diffrent types of sim cards?

1.If their is, what kind of sim card do i need for a nokia n81 phone?





2. what is the cheapest way i can buy minutes?

Is their a difference between sim cards, like diffrent types of sim cards?
Sim cards are all the same, as in they're all the same size and have the same function. The difference in them would be that they are from a different company, e.g. O2, T-Mobile, Vodafone, Orange, etc. Depending on what company they're from, you will get different minutes and texts deals on it. Check out the websites for these companies, or you can call them up, and find out what's the best deal for you.
Reply:that phone takes any cimcard so i prefer t-mobile its cheap like 10 dollars for the sim and like another10 or15 for activation