Dagny and Terezi
Terezi could barely smell the colors on the screen, so she couldn't quite tell what was going on. Usually she had to get closer and maybe even lick the screen to get a better look. Obviously she couldn't do that here. Luckily for her, Dagny was cool enough tell her what was going on.
The other woman had stopped talking and Terezi heard her playing on phone. "Whatcha playing there?" she asked, leaning over to get a better sniff, er, look.