Posted by: kurtsh | December 17, 2010

INFO: Tethering your Samsung Focus to Windows 7 x64

Interested in tethering your Samsung Focus to a Windows 7 x64 installation?

I got these instructions from a coworker… and being that I don’t have a Samsung Focus but rather a LG Quantum, I haven’t personally tested these instructions.  So “caveat user”.

imageNote that while in “tethering mode,” phone will not sync with Zune over USB, nor will wireless sync work, even if it’s set up.  Switching back to “Zune mode” will re-enable this.  Use wap.cingular in the init string (see below) if you don’t have a tethering-enabled data plan (and use judiciously so you don’t get caught by AT&T), otherwise use isp.cingular.

Enabling the phone:

  1. If "Diagnosis" app shows in app list, select it to access diagnostic keypad, otherwise go to dialpad and dial ##634#, then hit the call button.
  2. Using diagnostic keypad, dial *#7284# to bring up the USB Path Control settings.
  3. Select the tether mode.  Allow phone to be restarted.  Zune sync won’t work while in this mode.  Use same steps to switch back to Zune sync mode.

Setting up Win7 x64 driver/modem:

  1. Run "SAMSUNG_USB_Driver_for_Mobile_Phones.exe" to get the modem drivers installed.
  2. Connect Focus via USB.  Drivers should be installed successfully.
  3. New modem, "SAMSUNG Mobile Modem," is installed.
  4. Open Device Manager, find the modem, and open its properties.
  5. In the Advanced tab, set the extra initialization commands textbox to:
    AT+CGDCONT=1,"IP","isp.cingular" ("wap.cingular" is the "non-tethering" access)
  6. Disconnect Focus and repeat steps 2-5 for every other USB port that might be used in the future.  For each port, a new modem entry will be added (with a sequential number), and each one needs to have its initialization string set.

Setting up the DUN connection:

  1. Make sure the Focus is connected via USB, that the phone has been enabled for tethering, and that the drivers and initialization settings are taken care of.
  2. Open the Network and Sharing Center.
  3. Click the link to set up a new connection.
  4. Select to set up a dial-up connection.
  5. If prompted to select a modem, select the Samsung modem.
  6. The number to dial is *99#
  7. The username is left blank
  8. The password is left blank


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