To all of my Windows Phone 7 and AT&T users out there looking to do more with their devices, we now cover the subject of tethering.    We have researched ways upon making this task (that is not officially supported by Microsoft) as simple as possible.   By the ways of accessing a secret menu, tethering is possible but make sure you have a data plan or tethering plan that covers it or else you may wind up with a hefty bill next month.   The step-by-step instructions are below after the break.

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. [UPDATE: I forgot to mention that you need Zune installed on the PC or else the driver  install won’t go correctly. If the drivers fail, add Zune, reconnect the phone and they’ll be fixed. Also, if the drivers don’t work try the drivers here] 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#
user name: WAP@CINGULARGPRS.COM
password: CINGULAR1



For LG Quantum users:


First, you’ll need to make sure you have Zune installed. If needed, you can download the LG USB drivers separately here (LG_USB_Drivers_All_4.9.7.exe) and here (PilotesLGe900.exe). Next you’ll want to turn off your data connection, although some users report it working without do so, we’d opt for the former.
Now it’s time to follow some steps:
  • start dailing ##634#
  • password 277634#*#
  • 7. Engineer Menu
  • 3. Port Setting
  • 1. USB Switching
  • 2. QC COMPOSITE
At this time the phone will restart. Connnect it to your PC and use the dialer on LGE CDMA USB Modem with phone number *99***1#
If it asks for a username use WAP@CINGULARGPRS.COM and password CINGULAR1
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