PdaNet lets you use your Android phone as a mobile modem for
your PC or Mac by “tethering” the phone to your PC via a USB cable
or via Bluetooth. Tethering is also built into Android 2.2 without
the use of PdaNet, but not all phones are upgraded to 2.2. And even
some phones that are such as the original Droid, don’t have that
capability. That’s why you need PdaNet. It works on BlackBerry,
Palm, and Windows Mobile phone OSs as well.
Note that no matter what phone you’re using, you should check
the terms of service with your mobile service provider, in case
they don’t allow you to tether your phone. And if you want to use
PdaNet on your iPhone, you’ll have to jailbreak your phone.
Note: This link takes you to the vendor’s site,
where you can download the latest version of the software
appropriate to your phone. For the Android version, please see the
review in the PCWorld Android AppGuide. Please note that the
iPhone version runs only on a jailbroken iPhone.