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.
Population: 426,388
Worst Carrier: AT&T
Best Carrier: Sprint
Terrain — from the Colorado Rockies to foliage — can affect signal strength. An overload of users can also weaken signals, as anyone who’s gone to a rally or concert probably knows all too well.
