Twice now I have had my G4's phone earpiece speaker basically not work. It is either totally silent, or just crackles a bit.
The first time was when I transferred a call off of Bluetooth in my car, back to the handset. I heard nothing, but it was fine when I sent it back to BT.
And just now I noticed it again. Tried to listen to a voice mail, no Bluetooth, and realized the earpiece speaker was doing nothing. Crackled a bit when I called a number and something answered. But I put it on speakerphone, and it was fine.
Rebooted, and it's OK now. But geez, for a PHONE, that is not impressive at all.
I have Verizon, with Advanced Calling enabled.