It seems like OEMs are stepping up their game, with regards to the quality of their devices’ sound and speakers. HTC kicked it off with the fabulous Boom Sound speakers on the original HTC One and its successor the One M8, as well as the mid-range Desire 600 and Desire 816, and Sony hopped on board later with their first front facing speakers debuting on the Xperia Z2. With the bar set up high, other OEMs, such as LG and their G3, may be feeling the heat.
With this said, if you’re an LG G3 owner and are not quite happy with the speakers, you may be interested in a tutorial written by XDA Senior Member spiderio. The tutorial teaches you how to boost the volume of the headphone and speakers on the G3, and involves a few changes to a couple xml files. As it’s not a standalone mod, you’re allowed the flexibility of setting your own volume limits, which may be different from person to person. And as always, make sure you make a backup of the original files in case you may want to revert the changes in the future.