Yeah, the mobile phone is one of the most prevalent causes of distraction and one of the most wasteful ways a person can use time, generally. Think Facebook and other fucked up things people waste time on.

I'm not surprised you're fairly organised and the phone face down on silent is a big one; I'd be interested in a study that identifies the time wasted split up into office and personal life the mobile phone is responsible for.

Anyway, right now I'm distracted by a coffee the waitress put in front of me; my post-work coffee and so I'm off to enjoy it.