Free volume booster

Push a button of the volume booster and:
* make the phone ring louder;
* listen to music at maximum volume;
* play video with maximum volume.

Free volume booster adjusts the volume for all audio streams of the phone, even on the phones on which this is not possible:
* Alarm sound;

* DTMF (keypad dialing sound);

* Music volume;

* Notifications volume (SMS, E-mail, etc);

* Phone ringer volume;

* System sounds volume (battery low, etc);

* Voice call volume.