Three separate iPhone 4S launch day studies have shown noticeably more buyers being switchers from the BlackBerry and other platforms. The most detailed, a 195-person study by UBS analyst Maynard Um in New York City, had 75 percent coming from an existing iPhone versus 80 percent a year ago. Of the remaining group, about 10 percent were jumping from a BlackBerry, while five percent each were coming from LG and Samsung phones; four percent were coming from Motorola.
