"The article is stating that these problems occur more often on iOS vs Android, not that these problems occur on every phone"
The title of the article is:
"iPhones and iPads Fail More Often Than Android Smartphones – Study"
This means the authors of the article want you to think that Androids are better than iPhones.
Yet a Wifi connectivity issue is given the same weight as a touch screen failure or a random reboot because those problems only affect 1/3 of Android phones whereas 2/3 of iphone users have wifi connectivity problems.
What's the point of an Apples (heh) to oranges comparison other than the click-baity title then?
There's no real information here. Just massaged statistics for an ad hit. It's worthless for a comparison and, worse, the raw data doesn't make any sense in the article either so it's doubly worthless.