That happens to be annoying when holding the device with one hand since you can't just use a thumb, or with two hands (for weaklings like us) because you have to drop one hand to do scrolling, or use a janky dual thumb method.
There is no doubt that the circumstances were not helping Murray but there seemed every chance the match would carry over into a second day as darkness fell, only for the Briton to drop serve twice in succession and hand Berdych the win.