Put your signal on the map.

Test your mobile connection, record whole journeys and share what you find with Buffering Britain. Every reading helps us prove where mobile signal is letting people down – and press those in power to fix it.

Get the iPhone app

Free to download. No account required.

The Buffering Britain app showing a poor signal test result — The Buffering Britain Testing hub and campaign career screens on iPhone.

The Buffering Britain campaign career screen showing journeys, Suffer Points and badges — The Buffering Britain Testing hub and campaign career screens on iPhone.

A completed Buffering Britain test showing a poor signal result of 3.2 Mbps download, 0.8 Mbps upload and 186 milliseconds latency

Record a single test…

Run a test wherever coverage lets you down. Our app measures download speed, upload speed and latency, and saves failed tests as evidence too.

Strong signal or weak, every test counts.

Download: How quickly things load
Upload: How quickly things send
Ping: How fast the network responds

…Or a whole journey.

Start recording, pocket your phone and our app checks your mobile signal every few hundred metres. When you finish, you can see where the journey hit the buffers.

Use it on a commute, road trip, train journey or walk.

A completed journey recap showing distance, duration and signal tests

Pocket your phone: Our app keeps checking along the way
Light on battery and data: A quick test every few hundred metres
Finish when you do: Stop the journey whenever you arrive

Your tests. Proof of a national problem.

Every test you record appears on your map. When you choose to send one to Buffering Britain, it joins the national evidence we use to show politicians and decision-makers where mobile signal is failing people.

Your results help prove the problem to those with the power to fix it.

A poor signal result ready to send to Buffering Britain — A poor signal test can be submitted to help build the wider Britain map.

The Britain view in the Buffering Britain app, showing submitted signal evidence by region — A poor signal test can be submitted to help build the wider Britain map.

Capture your test: Run one wherever coverage lets you down.
See your record: Your saved tests build your own signal map.
Strengthen the case: Submit results to help prove where Britain is buffering.

Found a not-spot? Make it count.

Download the Buffering Britain app, test the places that fail you and help us prove the problem to those with the power to fix it.