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1. The first rule is to make backup copies of all the important data in your phone because this will ensure that you will not lose anything important in the process.
2. Then make sure that iPhone has undergone the process of jailbreak because you will need Cydia.
3. You will need to launch Cydia Installer and then press the Manage Tab.
4. Then you will see the Services Tab, just press it.
5. An Edit Tab will appear at the upper right corner of iPhone’s screen.
7. Then you can return to Cydia and press Done Tab.
8. Go back to the URL you just added then select the software and then you can start installation.
9. Once you have successfully installed the software, just return to Cydia.
10. Switch off your unit and turn it on again. Then you can try inserting your choice of SIM and see if it really works.A Guaranteed Way To Have Unlock IPhone 4.0.
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