You can get an unlocked Samsung SGH D307 from online sites like Ebay or Amazon. Always before buying an unlocked cell phone make sure from the seller, how safe was the cell phone unlocked? Certain software unlocked cell phones may give OS problem while working with other networks. So, it is better to get a network locked phone for lesser cost and unlock it yourself safer using unlock code. You can get the unique unlock code for a Samsung SGH D307 from SuperUnlockCodes.com at affordable cost with an easy unlocking guide. Good luck.