About OpenSignalMaps

With your help, we're creating a comprehensive database of cell phone towers, cell phone signal strength readings, and Wi-Fi access points around the world. This data is collected via our Android application and uploaded to our servers, taking care to use as little processing power and battery life as possible.

You can use this website to browse the data we've collected, including heat maps that show exactly how strong signal is in any particular area, as well as all the nearby towers for your carrier. Take a look around, and feel free to contact us if you have any questions or feedback.

Where does the data for our map come from?

The data is collected by users of our Android application. This data is stripped of any identifying information, and uploaded to our servers. We make this information openly available on this website, and provide a graphical interface to enable you to make sense of the raw data.

Our pledge

In return for users submitting their signal strength data, we pledge to generate a coverage map and make it available for anyone around the world to view, for free, at any time!

We need your help!

Please help us on our mission to map cell phone signal around the globe! Download our Android application, and not only will you be able to view nearby towers and signal information, but the application will automatically upload this information to our servers and help us keep our heat maps and tower locations up to date.