Phone goes off in class or a meeting?
It takes an eternity to retrieve the phone and press “reject”?
Next time, just slap your phone! Or the bag in which it is stowed!
The Silencer allows to mute your Android phone by simply slapping or shaking it when receiving a call.
Starting the Silencer’s background service via the Silencer app
In order to activate the Silencer, just download and start the app, and hit the button until it shows “on”. Then, the Silencer service is activated. This is indicated by an icon in the notification bar.
If you like your status bar clean, the notification icon can be disabled, too.
Muting calls by shaking the phone
Once you receive a call, make sure that the phone is accelerated, e.g. by shaking the bag it is stowed in. A short “toast” text will confirm that the phone has been muted.
Once the call ended, the phone will be set back to its previous state. That is, if the phone’s ringer was on vibrate before the call, it will be on vibrate afterwards.
Avoid accidental muting through auto calibration
You have guessed it, the phone uses the accelerometers to recognise your shakes and slaps.
However, different situations create different levels of acceleration. For example, when you are running your movement automatically accelerates the phone a lot. Yet, you probably do not want to silence calls in such moments by accident.
Therefore, on each call, the Silencer first analysis how active you are. In the first two seconds, it measures the current acceleration. The higher the measured acceleration, the more difficult it becomes to mute the incoming call. You will have to exceed the amount of shaking that has been created by your current activity.
This also means that the phone cannot be silenced in the first two seconds. That probably won’t be a problem, as you will need some time to react to a call.
Battery saving – sleeps when there is no call
For many users it is very important to know about the battery consumption of an app. No one likes standing in the middle of nowhere with the battery running low. The Silencer is designed as a listener. This means, it does not execute any code while there is no phone call. A phone call wakes the application up and starts the acceleration measurements.
Thus, as long as there is no incoming call the battery consumption is close to zero. Therefore, the Silencer will have little to no effect on the battery life of the phone.
Auto re-start when re-booting phone
It might also be annoying if you start relying on the Silencer, but forget to launch it after you restarted the phone. Thus, the Silencer will automatically be launched on start-up if it has been running before the phone was turned off.