According to new data shared with AllThingsD by Consumer Intelligence Research Partners (CIRP), the average monthly carrier bill of the typical iPhone user is the highest in the smartphone market. iPhone owners spend more on wireless fees than owners of any other handset, be they Android, BlackBerry or Windows Phone.

CIRP also points out that carriers “are working hard to make their money back” because of high subsidies on the iPhone.

T-Mobile aims to buck that trend by doing away with phone subsidies this year, and other U.S. carriers are weighing their options too.