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After the upgrade to 3.0, under the Tether wanted to use, but is the iPhone 3G contract optus Australia, 10 Australian dollars per month in order to use functions Tether. But we can not optus activated through Tether.

1. In the iPhone to open safari, open the web site: HTTP://help.benm.at/help.php

2. The drop-down scroll bar until Tethering & Internet Settings click on the following Mobileconfigs, select regional and national operators.
3. After the confirmation window will pop up.
4. And then return to iPhone’s Settings->; General->; Network it can open the Internet Tethering.
5. Open the option via Bluetooth or USB (USB recommended charging side of the Internet side, not have to worry about power issues).
6. If you choose USB, USB into the computer will automatically install the driver.
7. After installation is complete, will the emergence of new network connection, can now flow through the mobile phone to surf the PC on.

Friendly Tip: enough attention to the selection of cell phone traffic course, do not flow super cell phone.

If you need to cancel settings, can Settings->; General->; Profile following the abolition of the network settings click Remove. In the absence of the iPhone 3.0 jailbreak can be activated through this set Tethering.