mobile phone

smartphone

device

tablet

cellular

cell phone

cellphone ui

mobile sfx

volume notification

step lower

higher

increase

decrease

more

less

press button

adjust

adjustment

plus one

minus one

more less

sound setting

set the volume

set

louder

volume up

volume down

tone down

tone up

quieter

softer

boost

gain

increment

raise

regulate

modify volume

lower volume

take down

bring down

bring up

user interface

multimedia

multus media