Some time ago I’ve wrote about some methods on how to unlock iOS 6.1 for iPhone. Now I am going to try to explain and give you some useful tips which you can use to unlock 04.12.05 baseband iOS 6.1 and iOS 6.1.2. I will try to give explanation about each of them and I hope that you will be able to understand them and learn whether you can use them and if not I would recommend not upgrading your phone.
Before I write this I would like to inform you that from Feb 26 it is prohibited by law to unlock iPhone if you are user who currently resides in the United States or you have bought your phone after Feb 26, but if you are not feel safe to use these unlocking solutions and I hope they will be very useful to you.
How to Unlock 04.12.05 Using Gevey SIM
It is possible that you have heard about the technique of unlocking with Gevey SIM, but unfortunately it is not possible to unlock iPhone 4 baseband 04.12.05 with it. Currently there are no new updates on this so I would strongly recommend not using this method.
But of course there is no room for panic because there are other methods who use factory unlock and they may be very useful to you.
I will demonstrate them below.
SAM TOOL is a very popular tool for unlocking iPhone, and the best part is it that you can get it for free. But still it is only possible to use the SAM software if you already have Activation tickets. If you do not have activation tickets you won’t be able to use unlock for iOS 6.1 baseband 04.12. But for those of you who have activation tickets I will give an explanation in the below section.
Step 1: Install SAM via Cydia. Repo address: http://repo.bingner.com
Step 2: Insert your unofficial SIM card.
Step 3: Open SAMprefs, Go to Utilities and tap Attempt Activation.
I will give more specific explanation later.
You probably know what IMEI is. The IMEI (International Mobile Equipment Identity) is a unique 15 digit code used to identify an individual mobile station to a GSM or UMTS network. The IMEI number provides an important function; it uniquely identifies a specific mobile phone being used on a mobile network. Most experts recommend unlocking 04.12.05 baseband iOS 6.1 on iPhone 4 using IMEI tool because in this way you protect your warranty and can upgrade your device without experiencing any problems and of course the unlocking is not temporary but permanent.
If you have some questions please write in comment bellow.