Can I buy an unlocked iphone 3GS and put it into Virgin Mobile?

I was thinking of buying an unlocked Iphone 3GS and switching it to Virgin Mobile into their smartphone/data plan. Is it possible and can you tell me additional information if you can?

Well, if it's an unlocked phone you can put any sim in it weather it be virgin contract, virgin pay and go, orange contract etc basically yes it will work fine
Hope this was helpful

You can unlock your iPhone. First of all, you have to jailbreak your phone using a program such as Redsnow or QuickPwn. This allows you to run applications on your iPhone that have not been approved by Apple. This is essential to unlocking your iPhone 3GS because the applications (e.g. Cydia) used in the unlocking process are not Apple approved.

After that, you have to
- Go to "Settings" >> General
- Press on "Network" >> OFF "Enable 3G"
- Go to "Menu" >> Press the "Cydia" icon on your iPhone home screen.
- Press "Manage" when the app loads >> Source >> Press "Add"
- Enter in "repo666.ultrasn0w.com" (at Enter Cydia / APT URL) >> Add Source
- Go back to the Cydia sources menu and you will see the Ultrasnow package
- Click on it to download and wait as it is installed
- Turn off the iPhone.
- Use the paper clip to press the SIM tray release button on the top of the phone and remove the SIM card
- Place your new SIN card in the tray and close it
- Turn your phone on
- Your new network provider's details should appear on the screen.

If they do not, please check that the SIM card is correctly placed in the iPhone tray.

Your phone is now unlocked to any network.

No only iphone from virgin mobile will work.