This guide will teach you how to replace the speaker in your LG G Vista. The speaker is easily replaceable, and you will have a brand new speaker in no time as long as you have a Phillips #000 screwdriver.
Use a Phillips #000 screwdriver to remove five 3.0 mm screws.
Use a plastic opening tool, or your fingernail, to lift up the bottom hard shell cover.
Remove the hard shell from the device.
To insert your new loudspeaker, simply take the piece and snap firmly into the place of the previous loudspeaker.