(Reuters) - John Stuart has been chained to his BlackBerry for years, first as a systems manager for Wall Street bank Morgan Stanley and then as chief information officer for Beverly Hills Wealth Management.
But this week, Stuart ordered an iPhone from Apple Inc, ending his 7-year relationship with BlackBerry maker Research in Motion.
His move highlights how even security-conscious banks and IT managers, who have been among RIM's most loyal customers, are starting to defect, lured by improvements
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