[mindfrost82]

Another thing you can try is to keep this setting on WCDMA Only, then when you need to force 2G, do it in the Settings > Wireless & Network > Mobile Networks.

Then when you want to go back to 4G, uncheck that 2G only box.

The first time you do this, go back into that hidden menu and see if it stays at WCDMA Only or not...I haven't checked this myself.

Let us know how that works!