What's the point of a cell phone alert sound/vibration to inform you that you just missed a call? Not an alert that you have a voicemail, but an alert a few seconds after the call times out to tell you that you have a missed call.
If I'm in a position to hear/feel the ring/vibration, then I probably heard/felt the original ring/vibration indicating that I had a call. If I wasn't aware of the original call, then I'm probably not going to hear/feel the "missed call" alert a few seconds after the ringing stops, so I'll just see the "missed call" message next time I look at my phone. What purpose is the audible/vibration alert supposed to serve? It's especially odd when I hit a button to make the ringing stop...and a moment later, my phone "alerts" me about the call I just actively silenced.
(BTW, I did turn that alert off on my phone--I'm just curious about the motivation for including it to begin with.)