Not only are iPhone users more loyal to their carriers, they’re also loyal to their choice of phone, as they are least likely to switch phones due to call quality issues. 29% of iPhone users said they probably wouldn’t make the switch, while only 18.7% of Android users and 17.5% of BlackBerry users said they’d stick with their original choice of phone. The US average is about 22.5%.
And Apple would have to do a major screwup to change that. I personally know about ten people who changed from dumb phones, Androids, or Blackberries, to iPhone. And there is a pretty good chance they’ll keep them, judging by the fact that their overall impression of the iPhone so far has been very positive. This spells really bad news for Blackberry and WP7, the two who need to grow market share. There won’t be much room to go if things keep going the way they are right now.