If you prefer to use the vibrate mode when your phone is on silent then please look at my Toggle Sound And Lock application instead!
If you use this application and would like to show your appreciation for it then please consider downloading the donate version for 50p! I would be very grateful! Thank you.
I developed this application because I started using the MIUI ROM and really missed the ability to toggle the phone sound from the lockscreen. I also miss it from any phone I use to be honest!
Sound Toggle And Lock runs as an application and not a widget, however, you can still put it on your home screen like a widget. This is to keep the overall size of the application to a bare minimum. No fuss, no mess!
Please note, if you want to remove this application then you need to go to Menu > Security > Device Administrators and then untick it from the list. This is not so it's awkward to remove but because Google make it this way for applications that lock your screen!