X-SIM v4.19 is the latest version of X-SIM, which can be used to unlock iPhone 4S / iPhone 5 on any iOS version, up to the latest version, iOS 6.1.3. The X-SIM is updateable by using X-SIM special updater dongle.
You may use X-SIM to unlock any iPhone 4S/5 locked to any carrier.
No need to dial 112, all you need to do is put X-SIM along with the SIM card, enter the IMSI number → tap Send → Accept.
That's all you need to do to unlock your iPhone using X-SIM.
X-SIM can also be used to activate iPhone, if you don't have original carrier's SIM card and stuck on "SIM not valid" activation screen.
Please add in the order comment (on checkout page) if you need X-SIM Micro (for iPhone 4S) or X-SIM Nano (for iPhone 5)