LineKeeper questions, answered

If the label on your hub's power plug says 12V, yes. That covers current hubs from BT, EE, Sky, Virgin Media, TalkTalk, Vodafone and Plusnet, plus the white Openreach fibre box on the wall. The adapter tips and the splitter lead are in the box.

No. Unplug the hub's power lead, plug it into LineKeeper, then plug LineKeeper's lead into the hub. It takes about 60 seconds, with no app and no settings.

Yes. Full fibre homes have a separate white Openreach box on the wall as well as the hub. Use the splitter lead in the box so 1 LineKeeper powers both.

Then LineKeeper isn't the right fit, and we'd rather tell you than sell you something useless. Check the label on the plug before you order — and if it arrives and doesn't fit, the 90-day money-back guarantee covers a full refund.

Unplug it and take it with you. It works with any UK hub whose plug says 12V, so switching from BT to Sky or Virgin to Vodafone makes no difference.

Behind the telly or next to the hub is fine. Keep it dry, out of direct sun, and don't cover it — like any battery, it likes a bit of air. It has no fan and makes no noise.

4 hours or more on a typical hub, from a 74 Wh battery. Running the fibre box as well, or an older power-hungry hub, brings that down. A small modern hub makes it last longer. Either way, that's several times the 1-hour minimum providers work to.

LineKeeper takes over in the same instant — a zero-second handover — so the hub never restarts. Your dial tone, Wi-Fi and anything that calls out through the line, like a pendant alarm, carry on without a gap.

LineKeeper powers the equipment in your home. Your provider's network has its own backup power further up the line, and in most power cuts the weak link is the hub in your front room. That's the link LineKeeper fixes.

LineKeeper hands back to the mains automatically and recharges itself. You don't need to do anything.

No. LineKeeper is made only for broadband hubs and fibre boxes. That's what lets a small, safe battery last 4 hours or more.

Yes, that's what it's built for. It sits behind the telly, keeps itself topped up and does nothing until it's needed.

It charges itself whenever it's plugged in, and the lights on the unit show the charge level. Test it twice a year by switching the socket off at the wall — the hub lights should stay on and a corded phone should still give a dial tone.

Not on its own, because a cordless base station needs mains power too. Keep 1 ordinary corded phone plugged into the hub. They cost a few pounds, need no power of their own, and with LineKeeper behind the hub they work just as the old landline did.

Most alarm boxes have their own battery. What they lose in a power cut is the phone line, because the hub goes off. LineKeeper keeps the hub and the line up, so the alarm has something to call through. Always test it with the alarm provider after fitting.

Yes — it's exactly why LineKeeper exists. Since the switch to digital phone lines, your home phone plugs into the broadband hub, so no power means no phone line. A battery behind the hub brings back what the old copper line did by itself.

If you depend on your landline, for example because you have a telecare alarm or no mobile signal, ask your provider. They must offer a free solution to customers who qualify, but it only has to last 1 hour. Everyone else is usually asked to pay around £85 to £150.

Delivery is free and tracked anywhere in the UK, and takes 2 to 5 working days.

Visa, Mastercard, American Express, Apple Pay, Google Pay and Shop Pay — all through Shopify's secure checkout. It's a one-off payment, never a subscription.

The LineKeeper unit, a set of adapter tips to match your hub's plug, and a splitter lead for homes with a separate Openreach fibre box. Nothing else to buy.

1 pack covers 1 hub. Most families choose the 2-pack — one for their own home and one for a parent's — and it's the best saving per unit after the 4-pack. Bigger packs cover more homes or a hub plus a second property.

Send it back within 90 days for a full refund, for any reason. No questions, no restocking fee.

Order, fit LineKeeper, then switch the power off at the fuse box and test it — the hub lights should stay on and a corded phone should still give a dial tone. If it doesn't do what we say, contact us within 90 days of delivery and we'll arrange the return and refund.

Contact us and we'll sort it — repair or replacement. The 90-day guarantee covers refunds; after that, faulty units are still our problem, not yours.

Through the contact page — we answer every message, usually within 1 working day.