Family Coverage report
Pick the export from every phone in your household. The files are read here, in your browser: nothing is uploaded, and nothing is kept after you close the page.
Drop the export zips here, or
Networks at a glance
Every phone, every place, the whole period. Time is weighted, so an hour parked counts the same as an hour driving. ▲ marks the best network in each column.
If everyone were on one network
What each person's own time would have looked like on each network, from wherever any phone measured it. That's the fair comparison when the phones carry different networks.
Map
Each hexagon is about 175 m across, on the same grid as the FCC's coverage maps, and shows what the phones measured there. With an FCC layer (from your household's server, or a file chosen with the zips), a pane can show what a carrier claims to the FCC instead. Drag to move, scroll or pinch to zoom, and tap a hexagon for its numbers. Nothing on the map comes from the internet unless you turn on streets.
At your places
Inside each place's circle. The places come from the phones' household settings.
On the move and elsewhere
Trips and regular drives
Regular drives are drives between two of your places that happened at least twice; phones in the same car count once. Trips are times a phone spent 40 km or more from Home for 3 hours or more. A gap is 20 seconds or more without service on one line. "Map" opens OpenStreetMap in a new tab.
Dead spots
Spots about 100 m across where a network had no service for at least two minutes, worst first. "Map" opens OpenStreetMap in a new tab. That, and the map's streets if you turn them on, are the only things on this page that go online.
Two lines on one phone
For phones with two SIMs, read at the same moments: when one line had no service, did the other line have it, and was mobile data on the line that worked? A phone can move data by itself when its data line drops (a SIM setting such as "Switch mobile data automatically"). Without that, apps stay offline even while the other line has service, and some phones' backup calling (calls to the dead line over the other line's data) can't help either. Only time off Wi-Fi counts: on Wi-Fi, data and Wi-Fi calling don't need either line.
Tests
Mobile data use
Battery
How fast each phone's battery went down while it recorded, on battery power, parked and on the move. It's the whole phone's use, not only this app's: the screen, other apps and searching for a weak signal all count. Charging, paused recording and gaps of over 15 minutes are left out.