I'm a frequent pedestrian and I never, ever look at my phone while crossing the street or even when walking down the street. I can wait to check my phone.
When crossing on a green light when people are waiting to turn, I make eye contact with the driver and nod. People should do this especially with trucks and buses - You cannot just assume that the driver sees you.
I actually sometimes prefer to jaywalk but am very careful about it. The reason is because I feel that I'm in more control and feel it's safer than crossing at some busy intersections where drivers just fly around the corner without even watching for pedestrians. I see this happen a lot. I've almost been hit.