!!WARNING SETTINGS CHANGED IN 197328640 MODE DO NO RESET ON HARD RESET THESE SETTING STAY WITH THE PHONE YOU MIGHT GET THINGS BACK TO NORMAL BY USING *2767*3855# - Full Reset (Caution every stored data will be deleted.)!!
*#197328640# - Root Menu (See attached for full menu layout)
Things you can do with this code
Improve your Signal
1,8,3,6,1,[END] and reboot.
Speed up your internet by enabling hspda/hsupa
Teather your phone
Modem, Teathered Call
Remeber you have to move it back to ZUNE to USB sync
Increase your default volume. (Confirmed working now!!
Click Get under the Device Gain (max/min)
In the first box keep the number 7
In the second box put 16000
In the third box put 0
Click the home button.
Restart your phone. To verify the setting took click the get button and it should show your values.
Run a system diagnostic.