Ways on How to Unlock iOS 6.1.3 iPhone 4 / 4S / 5
After the public release of iOS 6.1.3 there was a rumor that it will be impossible to be unlocked and be used on older devices such as iPhone 3GS. 4, 4S and iPhone 5.
But as the time passed people came up with different solutions for this problems. Some of the methods for unlocking this firmware were using ultrasn0w. Gevey SIM, R-SIM, SAM unlock and most important the factory unlock iPhone method IMEI.
List of iPhone basebands compatible for iOS 6.1.3 Unlocking
Probably most of you do not know this but when the OS of the iPhone is being updated the baseband goes thru the same process as well. So in other words it means that the two of them get updated to their latest versions concurrently, but luckily it is possible to maintain the baseband on the same version as before. You can see below the list of basebands that can be used for iOS 6.1.3 Unlock
Dilemma on whether to use Gevey R-SIM or SAM unlock for iOS 6.1.3
Although these methods had been in use for several years, with the latest security additions they can not be used on the latest iOS 6.1.3 firmware. If you try doing so you will only lock your device again when doing the update. If you currently are using the baseband 4.10.1 you can maintain it and update your device without being worried of relocking. But the problem is that this can be done effectively only by the Gevey SIM iPhone 4 users and there is no assurance that it will work for others.
Method of Unlocking iOS 6.1.3 using ultrasn0w 1.2.8
Another solution for unlocking iOS 6.1.3 is using ultrasn0w 1.2.8. Important thing to do before you start this is to maintain the baseband, otherwise it will result with relocking of the device. In order for you to preserve your baseband you need to use sn0wbreeze tool which can be downloaded by clicking here.
Unlocking iOS 6.1.3 using the SAM method
If you are one of those people who by chance have saved their activation tickets you can easily apply this method to unlock your iOS. If not you must not update the firmware. Only if you have saved your tickets you can run restore on iOS 6.1.3 firmware.
IMEI METHOD for Factory Unlock of iOS 6.1.3
While there is no guarantee that some of the methods mentioned above will work, this method IMEI guarantees you permanent solution to your unlocking problem. Currently it is widely considered as the best iOS 6.1.3 unlock method. After this process if carried on you shouldn’t have no more issues afterwards because your device will be stored as unlocked in Apple’s database.
But this method can be used also on other carriers beside iOS 6.1.3 such as T-Mobile, Vodafone, Rogers, O2, Orange, AT&T etc. The firmware remains iOS 6.1.3 but there are several other firmwares included such as the firmware iOS 6.1.2, iOS 6.1.1 and iOS 6.0.1 . This service Unlock iPhone on any carrier in the world.
After the completion of the unlock process for the iPhone, the device can be used on any gsm network and carrier. So don’t wait and get the unlock as fast as possible/