How to unlock sprint iPhone 4S? - 1

I have an iPhone 4S on the sprint carrier. I was wondering if it is possible to unlock it and put it on a prepaid service such as virgin mobile or simple mobile etc. Also i would prefer it to get unlocked while its NOT jailbroken because that just makes the phone slow down alot! I know there are ways to unlock the phone with out it being jailbroken however i don't know if it works with the sprint iPhone 4S with up to date iOS.

Don't you have a contract with sprint if you cancel they will charge 350 dollars.

I would try T-Mobile, or maybe even Straight Talk! I know that they both use SIM cards to 'flash' any phone to their networks. They call it BYOD, or 'Bring Your Own Device'.

Also, assuming you are talking about Virgin Mobile USA, VMUSA phones only work on the Virgin Mobile USA network. There's ABSOLUTELY NO Way you can transfer your Sprint iPhone 4S to Virgin Mobile USA.

Just a tip! Best of luck!

Yes, it is possible to unlock an iPhone 4S without jailbreak. You can approach http://www.prounlocking.com/apple-iphone-4s/rs16wp9/ and avail their remote unlocking service for your iPhone 4S and once the mobile is unlocked you can use any GSM network on your mobile. This will be a permanent unlock solution for your mobile. Hope your mobile was bought before Jan 26, 2013 ;otherwise you need to get prior permission from the respective network provider to use third party unlocking service.