How To Tether With A Samsung Windows Phone 7 Handset

MobilityDigest have discovered a way to flip their Samsung WP7 phone into USB mode, allowing them to tether from the device. Here’s the step-by-step:

1) open your phone and dial “##634#” then press call. You’ll go into the Diagnosis Menu (going forward this icon appears in your programs so you don’t need to dal that again). This is just a phone dialer with a little icon and note on top.
2) In diagnosis mode (phone dialer) dial “*#7284#” and a dialogue will pop up letting you change the settings from Zune to modem or “Modem, USB dialog.”. You want to go with “Modem, Tethered Call”. It will restart you phone after a few seconds. Once it restarts, connect to your PC over USB and drivers will be installed on your computer. Now go to your connections on your PC and you’ll see that a Samsung modem was added.
3) on your PC you need to change the setting for the Samsung modem. If you set it to prompt for user name you’ll be able to put in the login info. This is all it is:
number: *99***1#
password: CINGULAR1
Go to connect and BAM. You’re tethered. I will tell you it went to ‘register’ the first time and failed. The second time worked and now I can connect and disconnect by plugging/unplugging my USB cord and I’m tethered baby!
So you know, as long as you are in this mode Zune will not connect. You need to change the settings back to Zune for USB. So just sync Zune over wifi and call it a day and leave USB for tethering.

There’s still no indication of how you can get this to work with other manufacturer’s handsets, or if it’ll work on a Mac, but that’s still a damn cool hack!

For more info on what you can do from the diagnosis menu (including checking out the MAC address) see here.


  1. muddtt says

    Just tried it and I can make calls while tethered. Although, someone called me while I was tethering and it went straight to voicemail…dunno if that happens everytime.

  2. Jezerik says

    I can get the diagnostics part to work correctly but when I connect to the PC the drivers don’t install automatically, and the drivers it does recommend don’t work, does anyone have a link to the correct drivers?

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