Blackberry Bold
Several articles on the smart phone user experience:

Getting emotional about mobile phones
A nationwide study of over 3000 people has found that there is a direct correlation between the way people use their phones, and the way they feel for the day.

Available all the time: etiquette for the social networking age
As Facebook, Twitter and 24-hour Blackberry access blur the lines between business and personal lives, managers and employees are struggling to develop new social norms to guide them through the ongoing evolution of communications technology.

iPhone ‘undisputed’ leader in customer satisfaction, study reports
A new study by the CFI Group reports that the iPhone has taken the top spot in customer satisfaction. The company surveyed over 1,000 smartphone users and the iPhone (surprise, surprise) came out as the top dog.