Sensorly is the only truly useful 3G/4G coverage map

Cellular provider's coverage maps can be a real exercise in frustration. Beyond the expected exaggeration of their coverage zones, they often are quite obtuse in their user interfaces, as well as slow.

A coverage project called Sensorly makes me really happy. It delivers clear coverage maps based on actual user's experience. Sensorly maps are automatically updated by folks who carry the app in their phones, so the data is raw and unmanipulated. And from what I've seen so far, crazy accurate.

Sensorly has it's limits--it pretty much just shows coverage on roads that have been traversed by its app users, but once you get the hang of it, interpolating these maps into real coverage zones is pretty easy. I highly suggest a quick look-up before heading our to do that next 4G remote in a new area.

Sensorly predicted VZW 4G coverage at Comrex headquarters