Impl step detector observation

Observing lock/unlock state on mobile devices
Fix issue observing screen on/off on iOS

• Observing lock/unlock state on mobile devices
• Fix issue observing screen on/off on iOS

Observe localization

Make the instructions cleaner by separating sensor, state and permission in each dir

Observe device volume change

Fix: Avoid the sensor manager listener from running on main thread

impl touch gestures observation

Observing

• Connectivity
• Active Network
• Location/GPS Status