where can a buy a SGH-F330 samsung cell phone
You can buy it from http://www.mobile88.com/cellphone/samsung/samsung-sgh-f330/ or ebay.co or Amazon.com etc. Note: Unlocked phones are too expensive. Better, you can buy carrier locked phone and unlock it from any of the 3rd party service providers like http://www.simpleunlocking.com/samsung-f330/rs16wp9/ to unlock it . Once, you have unlocked your phone from sim lock, you can use it with any other GSM networks .
in a shop.
look it up on the net? you could probably get one off amazon or something
ebay or craig's list