Like any other mobile phones, iPhone also uses an unique IMEI code. The code keeps a track and indicate the carrier to which it has been locked to. If you are in UK, iPhone comes locked with AT&T service provider by default. The users are not free to change to the desired network provider and has to follow the contract deal unless and until the iPhone is unlocked. Unlocking of iPhone makes it possible for the users to change the carrier whenever they desire so. Once the process for IMEI Unlock iPhone has been accomplished, the users are free to switch to other providers such as Vodafone, O2, Virgin etc. other than AT&T network.
The process of unlocking has been made possible with the help of third party IMEI Unlock iPhone 4S software. The tool has bee designed and developed using latest technique that makes it capable of unlocking iPhone in easy way. It is fully compatible and supports unlocking of various iPhone versions such as iPhone, iPhone 3G, 3GS, 4, 4S and latest iPhone 5. all it requires is to download the software and get it installed successfully on the PC. No technical skills are required as one can easily follow the user friendly wizard to run the software. You need to prompt and provide the IMEI code of the iPhone to be unlocked. A message finally confirms that your iphone has been unlocked and is free to be used globally on any network.