How-to Unlock the iPhone 5C to use on any Carrier and Internationally
An unlocked iPhone will allow you to use the iPhone with any carrier including international carriers. At the moment there are two ways to get an unlocked iPhone 5C.
You can purchase an unlocked iPhone 5C directly from Apple; just select “Unlocked and contract-free” for the carrier option. This option requires paying full retail price for the phone since you will not get a specific carrier discount.
The other method requires paying someone to whitelist your iPhone in Apple’s database. This service can be found all over the internet and usually comes with a guarantee. The service requires you providing the IMEI # on your phone which will then be whitelisted to use with any carrier. This method will cost around $25.