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Drop a pin on a beach, viewpoint or stretch of trail—not just a postcode.
UK-first · early access
Know where your phone will work before you go.
A simple signal map for beaches, trails and the places postcode checkers forget. Plan the day, compare networks and know where you’ll reconnect.
Free early access. No spam. Just meaningful product updates.
Concept preview
BRISTOL CHANNEL
Three Cliffs BayCoastal pathOn the beachThree Cliffs Bay
IDEAThreeLikely
VodafoneUncertain
EEUnlikely
O2Unlikely
Prediction + recent observations, clearly labelled.
Likely Patchy No signal
Postcodes stop at the car park.
Signal changes around every headland.
You deserve an honest answer.
Built for days outside
Not another mast map.
Signal Outside turns complicated coverage data into the few answers you actually need.
Compare networks
See a simple, honest readout for EE, O2, Three and Vodafone.
Know what’s next
Find the last and next likely signal point along your planned route.
The useful readout
“Will I have signal?” becomes a plan.
Before leaving, see the longest likely dead zone, where coverage returns and how confident the data is. Save it offline, because the information should still work when your signal doesn’t.
62%route likely covered
1.8 kmlongest dead zone
14:40signal likely returns
Questions, answered honestly
What we’re proposing
Is this a mobile signal checker?
Yes, but designed for exact outdoor locations and routes rather than addresses and broad postcode averages.
Will it guarantee coverage?
No. Terrain, congestion and your phone all matter. We’ll show confidence, freshness and whether a result is predicted or observed.
Which networks will it cover?
We plan to compare EE, O2, Three and Vodafone in the UK, beginning with popular beaches and walking areas.
Is it an emergency service?
No. It will help people plan, but it can’t replace emergency equipment or sound judgement in remote places.
Help decide what gets built
Would you use Signal Outside?
Join the list. If enough people need it, we’ll build the first working coverage map and invite you to test it.