I got the BB 8830 (sprint) a few weeks ago. The thing that I can't stand is how long it takes to start ringing. It will show on the screen a in coming call right away but it takes ten seconds longer to actually ring.. I have missed a few calls because it takes so long. It isn't set at gradual ring where it gets louder and louder either. It just takes forever to start. I use a stock ringer and have tested calling my phone on other phones and don't get it.