Some 84 percent of iPhone users said they would pick iPhone also when they replace their cellphone, while 60 percent of consumers who use smartphones running Google's Android said they would stick with phones using the same software. Only 48 percent of people using Research In Motion's cellphones said they would stay loyal to their Blackberrys, the study showed.
Gfk notes that while Apple is clearly ahead, developments next year including the growth of Android and a new Microsoft Windows could change things.
"Apple is clearly ahead of the game, but developments next year will challenge that," Garner, an analyst at Gfk said. "The scope for brands to lure customers from rivals has diminished and the richest rewards will go to those providers that can create the most harmonious user experience and develop this brand loyalty."
Around 4,500 people in nine countries were interviewed for the study.