I am also a victim of the "no sound" syndrome of the V300. Conversations over the speakerphone is just not right! I just received my third phone, and I'm ready to send it back.T-Mobile did all they could to solve the problem, except for their no exchange policy (they don't offer trade ins.) Based on my conversation with the sales rep and the Amazon reviews on this site, I'm very surprised this phone is still on the market- and it still seems like "bad batches" of phones are being sent out!Save yourself some time and embarrasment. Don't bother with this one.