I think it would be easier if the activity is in sync with the ext screen. Example: First call comes in and is picked-up at ext screen. Activity call#1 = selected and at ext screen call#1 = speaking. Second call comes in and is picked-up at ext screen, call#1 goes on hold (nice!!) and call#2 = speaking. So far so good. Now at ext screen call#1 = hold and call#2 = talking but in Activity I see call#2 is now on top but call#1 is still selected. The dialer is also at call#1 so if I hang-up it's call#1 and not the last call (call#2). It's better if call#2 remain on focus at both activity, dialer and ext display and all calls on hold stay in background. BTW I like the product.