In android system, you are unable to independently adjust the music volume, alarm volume, call voice volume and other system volumes.
you can boost volume on phone by set all your smartphone sounds to the max volume in just one click without you have to go to the difficult settings menu
volume booster speaker will increase the sound of your device by 30-40%, depending on your device.and also earphone volume booster can be increase by this best free app
Download this useful volume booster speaker for free now
Disclaimer: Speaker Booster will NOT damage your speakers.