I didn't like the curtain either and followed the thread kindly given by jpfa.
Whilst the dialer works well, one word of warning - if you install this, it is not so easy to uninstall.... I found the bottom line of telephone numbers (which includes the number 0 which is used in virtually ALL calls) becomes hidden after un-installing.
The part about the pop-up message notifying you that you need to put the phone to your ear after disconnecting a headset is quite annoying. I think on balance, more annoying than the curtain in the first place..... If you don't connect a bluetooth headset, this won't affect you, but if you do..... Well, you've been warned!!!
The end of the story for me is that I re-installed the Rhodium dialer. But I wish I hadn't installed it in the first place!
Diamond 2 -
with CHT2.0 & Enterprise I - WM6.5 Sense 2.5.2016