First of all you need to get a registry editor.
- Go to HKLM\Software\OEM\PhoneSetting
- Look for the file "HiddenModeOperationPage"
- Edit "HiddenModeOperationPage" from 1(default) to 0
Once you have changed the settings exit and go to:
Start > Settings > Phone > Services
You will now notice an option that was not there before "Mode of operation" in it you can choose between 1x only, Hybrid mode(switches from EVDO to 1x if connection is unstable), and EVDO only.
Attention: This method will block all incoming calls and SMS. Only use when needed.
Hope this helps a couple of you
