Temorarily Turning Off 3G Network

The best way to do that is probably via Root and a Custom ROM. On my D2G I'm running the Fission ROM which allows for different settings for the cellular network ie CDMA w/o EvDo.

 

Open Settings -> Data manager -> Data Delivery, and then uncheck "Data enabled". That will completely switch off 3G data on your phone, so the only way you'll be able to download anything is through wi-fi.

I only turn it back on when I need it.

 

Do any of the power management widgets (extended controls, switch pro, etc.) include a toggle that controls the data network feature mentioned above? When I attempt to use the APN-based data toggle on extended controls, it force closes.

It would be great to have a toggle in my power widget for this.

 

I use quicksettings (free) and it controls the APN, as well as brightness, wifi/gps/airplane mode, and several other (configurable) items. It's the ONLY app I've found so far that will enable/disable the GPS with one click, rather than taking you to the settings menu.

 

I already have Extended Controls and Switch Pro purchased. I will try them. Extended also does GPS one toggle.