Katy Steinmetz for Time Techland:

Are you plagued by dropped calls? Is your download speed slow as molasses? Well, that could be because your metropolis is on this list. As part of TIME’s look at how wireless technology is changing our lives, we partnered with data firm OpenSignalMaps to find out which cities had the spottiest service.

Bakersfield, Calif., Colorado Springs and Oklahoma City make the top three.