The plain answer · UK, 2026
Can you use your phone as a walkie-talkie?
Yes — with one condition nobody states up front.
A push-to-talk app turns your phone into a one-button voice channel for a whole group. The condition is that every phone in the group needs working mobile data or Wi-Fi, because a phone has no long-range radio of its own: the voice travels over the mobile network, not directly between handsets. Everything else you have read about this is a listicle.
How does it actually work?
A push-to-talk app sends your voice as a short burst of data to a relay server, which immediately forwards it to everyone else on the channel — so it behaves like a walkie-talkie while travelling like a phone call.
That difference is the whole story. A two-way radio transmits on the air directly to another handset, which is why it works with no network and why its range is limited. An app has no range limit at all — a crew in Hull and a crew in Cardiff are on the same channel — but it stops dead where the network stops.
What do you need to set one up?
- An Android phone each with mobile data or Wi-Fi.
- A channel. With CRAGGEN one person creates a private channel and gets a random four-word code, with an optional PIN.
- Nothing else. There is no account to create and no number to exchange — reading the code out loud is the whole setup.
Does it work with the screen off?
Yes — CRAGGEN is designed to stay on the channel with the screen off and the phone in a pocket, with an Android notification showing the service is running. This is the difference between a walkie-talkie app and a group chat: nobody has to be looking at anything for the message to arrive.
Is it free?
Joining a channel is always free and only the host pays, so a whole crew can be on a channel with nobody but the organiser on a paid tier. Free hosts a channel for up to six people. Pro hosts a larger group, supports a compatible physical push-to-talk button and can replay the last message that phone received. Crew hosts a larger group again and can monitor several channels at once. Google Play shows current subscription prices.
When is the answer no?
There are three situations where using a phone as a walkie-talkie is the wrong answer, and it is worth being blunt about all three.
| Situation | Why an app fails | What to use instead |
|---|---|---|
| No mobile coverage at all | A phone has no long-range radio. Nothing an app does changes that. | PMR446 handsets — licence-exempt in the UK |
| Raising the emergency services | CRAGGEN cannot contact 999 or any emergency service. | Dial 999. Register for 999 by text before you need it |
| Safety-critical or logged comms | Nothing is recorded, and congestion can stall the network exactly when it is busiest. | The licensed radio scheme your operation already requires |
Will satellite change this?
Possibly, but not yet: satellite-to-cell services now carry texting and some app traffic on ordinary handsets, and push-to-talk is a plausible fit because it sends brief low-bitrate bursts rather than a continuous call. CRAGGEN is not carrier-approved or field-proven on any satellite service today, and until it is we will keep saying so. The dated evidence — carrier by carrier, with our own row reading "not yet" — is on the satellite-to-cell status tracker.
Do you need a licence?
No — a push-to-talk app is data over the mobile network rather than radio equipment, so no Ofcom licence is involved. The UK licence page covers the handset answer too, with the Ofcom source for both.
Five letters, and everyone hears you
Create a channel, read the code out, hold to talk. No accounts, nothing recorded.
No account · no tracking in the app · no server audio recording · joining is always free