Europe and rather than paying AT&T to use the networks of its European partners, you want to take advantage of the favorable rates and local phone numbers offered by replacing your AT&T SIM card with a pre-paid European card, Or what if you'd prefer to use T-Mobile as your cellular provider, rather than AT&T, In the past month several groups have announced that they've found a way to "unlock" the iPhone, allowing it to use a SIM card from any provider.
Keep in mind that this is only half the story: the iPhone uses the GSM radio band for its communications, meaning that it'll only work with providers that use the GSM network. But another group has came up with its own hack that, with the help of some free, open-source software, lets you unlock your iPhone in about an hour, free of charge.
Below, I'll show you how it works - and it does work, because I've used this technique to unlock my own phone. Before we get started, you'll want to disable the iTunes helper application that may get in the way of the installation. Make sure iTunes is not running, then open OS X's Activity Monitor in the Utilities folder of the Applications folder. Search for or scroll down to iTunes Helper, select it, and then click on the Quit Process button in the top left of the screen.
You'll also need your iPhone, your data cable, and a Wi-Fi connection to the Internet. If you haven't already activated your iPhone with AT&T-and aren't planning to-you need to conduct a fake activation. Download and install AppTapp. Once you run the program, the first thing it will do is ask what version of the firmware you're running. If you've just updated your iPhone, you probably have Firmware 1.0.2-select that and click on Continue.
Assuming all goes well, you should get a screen that begins with the words: "Congratulations! You have successfully installed AppTapp Installer onto your iPhone." You should then find a new application on the iPhone's home screen called Installer. The next instructions will require downloading some applications from the Internet to your iPhone-so make sure your iPhone is connected to a WiFi network.
Launch the Installer program, and you'll see a long list of various applications that you can install. Scroll down, then select and install-in order-Community Sources, BSD Subsystem and OpenSSH. Then go to the iPhone's General settings and set Auto-Lock to Never. Next, you'll need to get your iPhone's IP address on your local network.
To do this, go to Settings: Wi-Fi and click on the blue arrow next to the network that you're connected too. Write down the IP address, as you'll need it for later. Now, open Cyberduck and click on the Open Connection button in the top left of the window. In the connection window, type the IP address that you just noted.
Make sure that SFTP (SSH Secure File Transfer) is selected, and that you are using Port 22. For the username, type root, with the password of dottie. Once connected, navigate from /private/var/root to the main directory by choosing the / item. Next, navigate to /usr/libexec and drag the file named lockdownd (the one you downloaded earlier) into it.
It will ask if you want to overwrite the existing file-click on Continue to do so. Now, in Cyberduck, drag the Unlock file from the Mac's desktop into the /Applications folder at the top of the main window. Once that's done, turn off your iPhone and remove the SIM card, then turn your iPhone back on and choose the application on your iPhone called Unlock.
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