I got a 928 on launch day (May 16, 2013) and never had any call quality problems on it until a few months ago where the audio speaker (if my ear is pressed up against the front facade of the phone) would go in and out, making it difficult to talk and therefore forcing me to use speaker mode (where there weren't any problems). I finally called Verizon about it and, from their end, they "re-synced" me to their towers. That didn't work, though, so I called back and the new guy deemed that because I was having these problems regardless of what U.S. state I was in, and because everything worked fine in speaker mode, that it must be a hardware problem.
Thus, as Verizon is keen to do, they sent me a refurbished device. Of course, I don't want a new device as it means I lose all my Xbox game saved data, but making calls is pretty important to. Just today I booted up the new phone (I have to send the old one back tomorrow) and it initially seemed better. However, the audio problems seemed to be inflicting this phone as well: several times in my most recent call the speaker went soft, making it hard to hear my discourse partner. I slapped the back of the phone (as I used to do on the old one when it had the same problems) and it kind of 'kicked' the audio back in. What is going on here? It's highly unlikely I got two defective phones.
Thus, as Verizon is keen to do, they sent me a refurbished device. Of course, I don't want a new device as it means I lose all my Xbox game saved data, but making calls is pretty important to. Just today I booted up the new phone (I have to send the old one back tomorrow) and it initially seemed better. However, the audio problems seemed to be inflicting this phone as well: several times in my most recent call the speaker went soft, making it hard to hear my discourse partner. I slapped the back of the phone (as I used to do on the old one when it had the same problems) and it kind of 'kicked' the audio back in. What is going on here? It's highly unlikely I got two defective phones.