Volume Booster - free app to booster your volume, speaker, music or headphone sound volume, like an amplificatore.
* We have 3 modes for you to quick settings: MUTE, NORMAL and BOOST.
* Music boost, playing audio at high volume may damage speakers/hearing.
* You should choose to increase the volume booster below 40%. You will have sound safe.
* This app does not work on most 4.2.1 - 4.3 devices. It should work on 4.4 and higher.
* This is not for adjusting the speakerphone volume in phone calls.
* The volume should increase moderately, slowly, to avoid the risks to your phone.