Improve dual calling

by Simon Lind

The UI for handling an incoming call while you're on the phone with someone else has been pretty heavily criticised. I spent a few minutes trying to think about how it could be improved. Splitting the mixed caller actions into two separate sections makes it more clear that there's an incoming call. There's a visual cue to which call is active (fill background color + audio waveform) and which isn't (light fill and dashed stroke). It also makes it possible to have more than 2 calls going on at the same time (although it's probably unlikely to every happen 😅).