Let's put it this way, when driving and using the handsfree, I cannot hear it. I missed 4 calls during 1 conversation and not sure if it is a software or hardware issue.
Please could you guys test it out on your handsets please.
I tested it, and it seems fine to me. Then again, since am testing it, I guess am listening out for it, not the same if it came in unexpectedly...
As a test, go to phone / options / general options / default volume, change it to 75% or something higher. And then see how it goes on the call waiting...