Hi, I tried searching existing threads, but I don't think there is any. Can anyone help me with this issue I am having?

I have installed the "Cellular Modem Control Buttons" app. It says that the "application is successfully installed". But I don't see any changes on my powerkey menu. There is no "tablet mode"
I have also installed the "3G/2G/Dual Mode Selection Applet", "Wifi Switched", and they are working.
I have tried uninstalling the "Cellular Modem Control Buttons" and re-install, then restart... Still no luck.