Eighty-nine percent of iPhone owners say they’ll stick with Apple for their next smartphone, according to a new survey by USB Investment Research (http://www.ubs.com/1/e/about/research.html).

HTC had a 39% retention rate,Research in Motion a 33% retention rate, Samsung a 28% retention rate and Motorola a 25% retention rate.

USB says the Android platform did better when users were asked simply about software. Fifty-five percent said they would stick with Google’s mobile platform. However, an additional 31% of Android users said they might switch to an iPhone next time around.