How to Unlock iPhone 4 on iOS 4.0.1, no computer:
1. Jailbreak your iPhone 4, if you are not Jailbroken click here to learn how
2. Open "Cydia"
3. On the bottom select "Manage"
4. Then select "Sources"
5. On the top right press "Edit" then on the top left press "Add"
6. In the box enter repo666.ultrasn0w.com (If you have it, adding the source may fail, if so just skip that part and proceed)
7. After the new source is installed select "Search" on the bottom
8. In the "Search" type in ultrasn0w
9. Once found, click on the package
10. On the top right hit "Install"
11.Then select the "Confirm" button
12. Let "Cydia" do it's thing
13. Turn off your device
14. Insert your SIM card
15. Then power on your device
16. Wait a few minutes until the unlock takes affect, which is anywhere from 1-10 minutes
17. And your done!
How to Unlock iPhone 4 on iOS 4.0, no computer:
1. Jailbreak your iPhone 4, if you are not Jailbroken click here to learn how
2. Open "Cydia"
3. On the bottom select "Manage"
4. Then select "Sources"
5. On the top right press "Edit" then on the top left press "Add"
6. In the box enter repo666.ultrasn0w.com (If you have it, adding the source may fail, if so just skip that part and proceed)
7. After the new source is installed select "Search" on the bottom
8. In the "Search" type in ultrasn0w
9. Once found, click on the package
10. On the top right hit "Install"
11.Then select the "Confirm" button
12. Let "Cydia" do it's thing
13. Turn off your device
14. Insert your SIM card
15. Then power on your device
16. Wait a few minutes until the unlock takes affect, which is anywhere from 1-10 minutes
17. And your done!