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What happens to your card machine when the Wi-Fi goes down?

If your card machine relies on Wi-Fi, a dropped connection costs you sales. Craig explains how Dojo’s built-in 4G keeps you taking payments.

By Craig Ashcroft
23 October 2026
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The short answer

If your card machine only works on Wi-Fi, a dropped connection or a power cut means you can’t take card payments, and you lose sales that day. Dojo card machines carry a 4G SIM, so they switch to mobile data automatically and keep taking payments.

“With Dojo card machines, they will automatically go into 4G mode, allowing that business to continue taking payment.”

Craig Ashcroft, approved Dojo partner

“We’re on a rural farm and Dojo machines are absolutely fantastic. If the Wi-Fi drops out, they have their own in-built Wi-Fi. We’ve not had any problem with any missed payments.”

Darren Clark, Clarks Family Farm, Woodplumpton

How 4G back-up works

  • Your Dojo machine connects to your Wi-Fi as normal
  • If the Wi-Fi drops, it switches to 4G automatically, with nothing for staff to do
  • The 4G SIM finds the nearest available network
  • Portable machines run on battery, so a power cut at the till doesn’t stop them

If you’ve got a business and you are relying on Wi-Fi on your card machine, and your Wi-Fi or electricity goes down, your business will lose revenue that day. Whereas with Dojo card machines, they will automatically go into 4G mode, allowing that business to continue taking payment.

Transcript taken from the video’s captions.

Questions

Yes. Dojo’s portable card machines have a built-in 4G SIM and switch to mobile data automatically when Wi-Fi isn’t available.

Portable Dojo machines run on battery and use 4G, so you can keep taking payments while the power or broadband is down.

Ask Craig for the details for your setup. 4G back-up is built into Dojo’s portable card machines.

Related: Dojo Go Max · Livesey’s Butchers case study · Clarks Family Farm case study

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