Before the G3, I had a G2.
I started to be unable to hear anything from the phone's speaker.
I called LG, set up a claim, mailed the device to them (Texas, if I recall), they fixed it at no charge and sent it back to me.
The whole process took 8 days.
I still have that G2 as it is now the wife's phone.
No problems with it since.
As the unit had an, as we say, a defect in work or materials, the repair was no charge. Just the $5 to ship it there.
What is the problem with yours?
Mav.
Sent from the future on my Sprint Tri-Band LG G3.