The “PIE Controls” is one of the coolest features of Paranoid Android custom ROM. If you aren’t quite sure what it is, just look at the image below, you can see a circular “pie” with virtual keys on it. You can bring up the “PIE control” by just touching on the screen and you have your choice to use toggles – a coolest and very practical feature.
Inspired by this Paranoid Android feature, the developer of CyanogenMod (custom Android ROM) has implemented the “PIE Controls” in the latest nightly build of CyanogenMod (CyanogenMod10.1).
If you’re a fan of CyanogenMod (the most famous and well-established of all custom Android ROMs), this is a great news. Now you can take full advantage of all available area on your phone screen.
See below video to know how to enable and use PIE on the latest Cyanogenmod Nightly