Some people become zombies on their cellphones. A couple of months ago, someone just walked out into the street from between parked cars, too busy looking at his phone, I had to slam on my brakes. He jumped back and the phone went flying from his hand. About a year ago another person was crossing the street, again in the middle of the block, not paying attention, she had he phone on the side facing my car. When I honked she thought the car was on the otherside of her and turned the wrong way while still walking in front of my car. 
Is it too much to put the phone down for a couple of seconds, while crossing the street?