Lock Your Phone to 3G network using a simple app

2G-3G OnOff - simple widget(1x1) for
changing network mode
It's shortcut(blame google for that) for
network system settings which allows
you change 2G-3G and data roaming
mode with 2 clicks instead of 4
How to add widget:
If you on HC, ICS or Jelly Bean:
Open All Apps -> Select Widgets tab -
> Find widget in the list
For older versions:
Long click on empty space on your
home screen -> Widgets -> Select
widget from the list.
If widget doesn't appear on the widget
list:
it is a bug in launcher, try to restart it:
Settings -> Apps -> Running tab ->
Click on Show Cached Processes ->
Select Launcher From the list and
click Stop.
Try to re add widget
Download here