I think the G8's call quality is much improved over other phones I’ve used recently such as the G7 and the Galaxy S10+. I have a significant hearing loss and wear hearing aids but, even with my hearing aids, I had difficulty understanding callers through the earpiece speaker on other phones. I now wear hearing aids that allow me to stream the audio from my phone to my hearing aids, and that's been a great improvement. I recently upgraded from the G7 to the G8 and I was curious about LG's Crystal Sound OLED (in-screen) Speaker. I turned off the G8's Bluetooth and I was able to understand callers fairly clearly using the in-display speaker. I still prefer streaming the audio but for most people, and especially those who are hearing impaired, I think the in-display speaker will be a big improvement over the earpiece speaker.