A new survey of American iPhone buyers by Consumer Intelligence Research Partners (CIRP) — as reported by “AppleInsider” (http://www.appleinsider.com) — shows the 73% choose the high-end iPhone 4S, while 38% of those buying Apple’s smartphone reported switching from Android or BlackBerry.

The latest data from the research firm (http://macte.ch/x3TAR) found that the number of customers switching from Android and BlackBerry to iPhone has increased from 29%in the previous survey conducted in February. The new data comes from a survey conducted in April of 7,348 U.S. subjects, 521 of which qualified to respond.