Mobile Data Toggle is a great application to for activate/deactivate mobile data connection. The app will make easier toggling 3g connection of your phone. It is one of the best 3g toggling app in the market.
Mobile Data Toggle offers widget for toggling 3g connection directly from your home screen. You can add its widget from home screen as usual. It also includes activities for use in conjunction with Locale, Setting profiles or any app that support shortcuts to activities.
The connection toggling takes a few seconds is due to the Android connections management. There are also grayed options in the application. These options are only available for donators. You can open the app and then click “Unlock features” for donating.
Keep in mind that publisher recommends to set 3G availability to true (with the app) before uninstall, to avoid problems.
Give it a try for making your 3g toggling easier:)