Ever since I got my MacBook Pro I have been trying to find a way to connect my Treo 700w Windows Mobile phone to OS X for a mobile internet connection while on the road. Verizon has amazingly fast EVDO service for my phone, and I wanted to take advantage of tethering it to my laptop. Syncing data (contacts, etc) on Windows Mobile phones in OS X is possible through 3rd party software, but until today I hadn't been able to figure out how to use my 700w as a modem in OS X. I searched Google for over an hour when I first got the MacBook, but was unable to find a workable solution. This past weekend I was finally able to see success and I thought I would share for everyone else out there trying to use their Windows Mobile phone as a modem in OS X.
I actually found the solution more or less by accident. The lease was up on my car, so I turned it in and decided to get a BMW with their iDrive system. Windows Mobile phones with Bluetooth will connect to the system for hands-free calling, but you can't browse the phone book, recent callers list, etc, out of the box. After some Google hunting I was able to find a blog post by Jason Langridge about Bluetooth car support for Windows Mobile devices. In his post he points readers to an add-on from JETware Mobile Software that opens up a lot of additional Bluetooth functionality on Windows Mobile phones, allowing systems like BMW's iDrive to access additional features on your phone. Installation was extremely simple, and it is only $15 to boot, with a free 30-day trial.
My phone now connected perfectly to the iDrive system, allowing me to scroll through and dial from my phone book, view recent callers, view my current reception level, and more. This got me to thinking -- if I now had more open Bluetooth on my phone, maybe my MacBook Pro could now play nice with my Treo 700w (or, more likely, the other way around). I set my phone next to my MacBook and it connected without a hitch.
When you are pairing your phone to your MacBook, OS X will ask you for a username, password, phone number, and modem type. It is crucial that you leave the username and password blank, and enter "#777" for the phone number (without the quotes). For the modem type, select "Verzion compatible" from the list. At this point you should be able to connect and use your phone as a modem.
I should note that in addition to the JETware Bluetooth add-ons and pairing the 700w with my MacBook Pro, I had already installed PDAnet's software which allows you to use your Treo 700w as a modem on Windows computers. This installs and runs on both your Windows computer and your phone, and the software it installs on your phone could be an integral part to the equation for Mac OS X. If the first two steps above do not allow you to connect, I suggest trying to install PDAnet as well.
Hope this helps others to avoid the frustration I have had for the past six months or so. Enjoy!
[Update 07/07/2007: Verizon has released a software update that seems to include lots of extra bluetooth functionality. I would suggest installing the free update and testing the new bluetooth capabilities with your iDrive before installing the JETware add-ons. Can anyone else verify if this works in the comments, please?]