Volume Booster

Volume and Brightness Controller application controls sound and brightness of smart phone and tablet.
some useful features are :
*controls system sound,
*ringtone volume,alarm sound
*media and notification sound.
*Also control brightness of android devices.
*Auto window popup during call for setting voice call volume.
*Most Helpful in case, your hardware key is not working.
*Easy and Handy application.
*at the time of calling app suggest volume control