CosmoCtl adds the following features to Cosmo Communicator. Each function can be used or not used.
- Forced auto-rotation of the screen.
- CoDi sleep/activate operation when cover is closed and CoDi auto control.(require root)
- Volume control when cover is closed. (requires root if volume buttons are used)
- Stop playback forward/backward song when cover is closed.
- The screen brightness adjustment range can be set arbitrarily registered multiple times and switched by shaking the screen.
- Automatic keyboard backlight when it gets dark. (requires root)
- Mute capture sound. (requires root)
- Keep vibrating when receiving a call.
- Display of system uptime.

(Notes)
Operate CoDi
- Root privileges are required.
- CoDi system settings must be turned on in advance.
- Battery consumption of CoDi during sleep is almost negligible.
- The restart time is about 2 seconds.
- By linked to StopSyncPro notifications and incoming calls that received while CoDi is sleeping can be displayed.
- When CoDi is sleeped CoDi settings are cleared.
- Sometimes CoDi will restart on its own but CoDi sleep automatic after a few seconds.

Operate volume key
- With CoDi enabled and the cover closed pressing the volume decrease button three times in a row will redial. The volume increase button can be pressed any number of times so double-clicking the volume increase button can decrease the volume. (It is needless when CoDi is locked or stopped.)
- The media volume changes even when the button is pressed as a CoDi operation.

Operate media
- All but rooted V20+ Cosmo Communicator use MediaButton to control music. you may experience strange behavior such as only certain players responding if you have multiple players installed or players that have not been started suddenly playing etc. These are Android and player specifications.
- Vibrate notification when get key event fails. Expect one previous double click too fast.

Keyboard backlight
The keyboard backlight turns on automatically when the illuminance sensor value reaches zero. It may turn on even in bright conditions for two reasons: 1) Cosmo's sensor is cheap and 2) the illuminance sensor is attached to the back of the screen. This cannot be improved.
The keyboard backlight turns on automatically when the user presses Fn+SHIFT+B or N. The keyboard backlight is affected by the input of Fn+SHIFT+B or N during character input. This input may be affected during text input. Exclusion can be specified for each application.
Shake sensitivity can be adjusted in "Icon and backlight control" - "Settings".