How to unlock iphone?
Unlocking iphone maybe illegal for your country. You must do with your own risk.
This method of unlocking iphone is for educational purpose.
Iphone is a product from Apple, Inc.
It is bundled with AT&T as the network provider.
Why you must unlock the iphone?
AT&T available at US only. So iphone is not applicable for outside US. If you stay outside US you must wait until somebody brought you the unlocked iphone. The unlocked iphone can be used at any GSM provider.
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Device be unlocked by entering a special code, or in some cases, over-the-air by the carrier. The easy one to do is by inserting the right special code to the the device. The code required to remove all SIM locks from a phone is called the master code or network code key.
If you can’t find the code here are the idea for unlocking iphone:
1. How is the algorithm of locking? Iphone will check wether the SIM Card is AT&T or not.
2. How its checking? Iphone will send generic command to network and check the response. The generic command usually using AT command. If no AT command, there must such command to identify the network.
3. So what should you do? Bypass this checking method and unlock it.
Please note I never unlock the iphone, because i never had it. Above method is my ideas how to unlock it.
The easy way is unlocking by software. Somebody has made this software at http://iphone.fiveforty.net/wiki/index.php?title=Main_Page
I never use it but they claim that this software will work.