Excerpt: The Sony Ericsson P990i is the much awaited upgrade to the popular P900 and P910i business Smartphones. The phone has taken a long time to come and the list of features is a combination of ups and downs. Is it worth the high price that it’s going for? Or does the M600i offer better value for money? Ergonomics and User Interface The P990i is rather large and somewhat heavy to hold, but only if you aren’t already a P910i user.