A turbo SIM card is designed to be used with your cell phone in order to unlock the unit or boost the wireless signal. This card is different from many others because you don't need to run any software to get it working with your phone. Even if you have a 3G iPhone all you need to do is install the turbo SIM and it will work on the unit.
Instructions
1. Turn off your iPhone 3G and hold it so that you are looking at the top of the unit. Notice the rectangular panel at the very top of the unit. This is the SIM compartment.
2. Unfold one end of the paperclip and insert it into the small circular hole next to the panel at the top of the unit.
3. Press the paperclip into the hole until it can't go any further and the SIM tray will then pop out of the iPhone.
4. Remove the old SIM from the iPhone and fit the turbo SIM in its place on the tray.
5. Press the tray back into the compartment until it locks in place. Turn on your iPhone and it will recognize the new SIM.
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