Gregory's ServerDistracted pedestrians are a myth, definitionally.
Drivers can be distracted because what they are doing requires significant focus. The same distraction applying to pedestrians is meaningless, because they are moving much more slowly, and so don't need to react as fast.
It's simple physics. If I look down at my phone for six seconds while travelling 70km/h I cross a city block....can I see that far ahead? No. If I look at my phone for six seconds while walking, I move about 15 feet...I can see 15 feet ahead.