This not only drives data revenues but also reduces churn, or the migration of smartphone users to competing carriers, as customers cannot change carriers before the expiry of the lock-in period.
The first change you're likely to notice is the new lock screen, which shows the time and date using Android's lovely new font, Roboto, and displays album art and audio controls during music playback.
Chris Hall, of the Rail Accident Investigation Board, said that Mr Lund would have had "no reason to believe" the train would change direction, which was most likely caused by the driver forgetting to lockthe reverse lever.