Corrected entry: In season 2, episode 22 (5:00-6:00 am), Kim drops the phone in order to shoot Matheson, then she picks it up again. Then Jack tells Kim to shoot him again, so she drops the phone first, shoots him, and when she picks the phone up for the second time it is upside down. Kim was talking in to the earpiece.
Corrected entry: In the second series in the 5.00 - 6.00 AM episode where Kim is walking around in the house, she looks out of one of the windows, where she sees the dead police officer. It was Gary Matheson who shot the police officer, but you don't hear any sound of a shot, and in the next scenes where Kim is shooting Gary there is no silencer on the gun.don_corleone