How to Backup a Hardware Wallet: A Plain English UK Guide

By Simon Bumford, Founder · 2026-07-29 · 10 min read

Learn how to backup a hardware wallet properly: what the recovery words are, paper vs steel, testing recovery, and the mistakes that lose UK holders their bitcoin.

How to back up a hardware wallet: the short answer

Backing up a hardware wallet means recording the recovery phrase: the list of 12 or 24 words the device shows you on its own screen when you first set it up. Write those words by hand, in order, on the card supplied in the box. Check every word twice. Store the card somewhere safe, dry and private, and for anything more than a small holding, copy it onto a steel plate as well so fire and flood cannot destroy it. That is the whole job. The words never get typed into a computer or phone, never photographed, and never stored in email, cloud notes or a password manager. Anyone who reads them can take your coins from the other side of the world, so they exist on paper or metal only. Get this right once and the device itself stops mattering. A hardware wallet can be lost, stolen or dropped in the sea and your bitcoin is untouched, because the coins were never inside it. The rest of this guide explains why that is true, and the mistakes to avoid along the way.

How do hardware wallets work? Keys, not coins

The name misleads people. A hardware wallet does not contain bitcoin, and nothing ever moves into it or out of it. Your coins are entries on the Bitcoin blockchain, a public ledger copied across thousands of computers. What the device holds is a private key: the secret that proves those entries are yours and authorises spending them. That distinction changes everything about backups. When you send bitcoin, your computer or phone prepares the transaction and passes it to the device. The device signs it internally and hands back only the signature. The key itself never touches your internet-connected machine, which is why malware on a laptop cannot simply steal it. The small screen matters just as much as the sealed chip. Because the device shows transaction details on its own display, you can confirm the amount and destination on hardware a hacker cannot reach, rather than trusting whatever your computer claims. Keys, not coins, is the mental model to hold onto for the rest of this guide.

What is a seed phrase and why is it important?

When you set up a hardware wallet for the first time, it generates a large random number, your master key, and translates it into 12 or 24 ordinary English words. The words come from a fixed list of 2,048, part of an industry standard called BIP39, created so that wallets from different makers could understand each other's backups. Every private key and every receive address your wallet will ever create is derived mathematically from those words. That means the phrase is not a password to your wallet; it is your wallet. Restore it on any compatible device and every account and balance reappears exactly as before. People ask whether 24 words are safer than 12. Both are, for practical purposes, impossible to guess: the combinations run to numbers with dozens of digits. The genuine risk is never guessing; it is how and where the words are kept. Anyone who holds the phrase holds your bitcoin, with no PIN and no second chance. Which brings us to the backup itself.

How to back up your seed phrase, step by step

Set the device up at home, alone, with the curtains shut if you like: this is the one moment your words are visible. The wallet will display the words one at a time on its own screen. Copy them onto the supplied card with a pen, numbered and in order, spelling each exactly as shown. Print your handwriting; a 'brain' misread as 'bran' will sink a recovery years later. One rule underpins everything: the words appear only on the device screen and your card. Never type them into a computer or phone, not to 'verify' them, not into an app that asks, not once. No legitimate setup ever requires it, and every prompt that does is an attack. Never photograph the card either; phone photos sync silently to cloud accounts that get breached. The device will ask you to confirm some of the words back. Do it slowly. Then run the test most people skip: send a small amount of bitcoin to the wallet, wipe the device, and restore it from your handwritten card alone. If the coins reappear, your backup is proven rather than assumed. Errors of spelling or order are invisible until a recovery is attempted, and the moment of recovery is the worst possible time to discover one. Finally, make a second copy and keep the two in separate places, so one burglary, fire or flood cannot take both.

Paper or metal? Choosing a seed phrase backup that lasts

Paper is where everyone starts, and it is genuinely fine for the first weeks or for modest amounts. Its weaknesses are the boring ones: a house fire, a burst pipe, a damp loft, a well-meaning tidy-up. Ink fades, and paper is easy to throw away without realising what it was. A metal seed phrase backup fixes all of that for a modest one-off cost. Steel plates, sold by most wallet makers and several specialist firms, let you stamp or assemble the words in metal that shrugs off fire, water and crushing. If your bitcoin is meant to be held for years, steel is the sensible standard: back up on paper the day you set up, then transfer to metal within the month. The same rules apply as with paper: no photos, no typing the words out to plan the layout, and the plate stored somewhere only you, and eventually your heirs, can reach. One refinement to know about, briefly. Many wallets support an optional passphrase, sometimes called the 25th word: an extra word or sentence you choose yourself that creates a hidden wallet on top of the seed, so a thief who finds your plate still cannot spend. It is powerful, but if you forget it nobody on earth can help. Treat it as an advanced step, not a starting requirement.

What happens if my hardware wallet breaks or is lost?

Nothing happens to your bitcoin. The coins sit on the blockchain, exactly where they always were, and your handwritten or steel backup is a complete copy of the key that controls them. A broken device is an inconvenience, not a loss. Recovery looks like this. Buy a new hardware wallet, from the same maker or a different one, since the BIP39 standard means the words work across most devices. During setup, choose 'recover' or 'restore' instead of creating a new wallet, then enter your words using the new device's own screen and buttons, never a computer keyboard. When it finishes, your addresses and balances reappear. Nothing was ever in the old device to lose. If the device was stolen rather than broken, the PIN buys you time, but the calm move is to restore from your backup and then send the funds to a brand-new wallet with a fresh seed. And if both the device and the written words are gone, be honest with yourself: there is no reset email and no support line that can bring the coins back. The backup is the wallet. Guard it accordingly.

Moving your bitcoin off the exchange first

Plenty of readers are one step earlier: the bitcoin is still sitting on Coinbase, Kraken or Binance. Coins on an exchange are controlled by the exchange's keys, not yours, so the backup you have just prepared protects nothing until the coins move. The move itself is simple if you respect two habits. First, when your wallet app shows a receive address, verify it on the hardware wallet's own screen, character by character, before you paste it into the exchange. Malware that swaps addresses on a computer screen is a real and common attack, and the device screen is the one display it cannot touch. Second, send a small test amount first, wait for it to arrive and confirm you can see it in your wallet, and only then send the rest. The few pounds in extra fees is the cheapest insurance in finance. We have written step-by-step walkthroughs for each platform: moving your coins from Coinbase, from Kraken and from Binance to your own device.

The mistakes that actually lose people their bitcoin

Hardly anyone loses bitcoin because a hardware wallet was cracked in a lab. They lose it at the edges, to a handful of repeating mistakes. Typing the seed into a computer or phone is the big one. Fake wallet apps, fake 'validation' websites and fake support agents all exist to coax those words out of you. The words never leave paper and metal, full stop. Photographs are the quiet second: one snap for convenience and the phrase now lives in a cloud account protected by a reused password. Second-hand devices are the third. A tampered wallet with a pre-completed 'backup card' in the box, its seed already known to the seller, is an old and effective scam. Buy only from the manufacturer's own store or a reseller the manufacturer lists as official, never a marketplace bargain. Then there is phishing, and it deserves respect because the criminals often know exactly who they are writing to. Both big brands have had customer contact data leak: Ledger's 2020 shop database breach exposed around a million email addresses, including roughly 272,000 names and home addresses later dumped publicly, and Trezor customers were targeted after a newsletter provider breach in 2022 and a support portal breach in 2024. So treat every email, letter or text that appears to come from a wallet company as hostile until proven otherwise. No genuine company will ever ask for your words. Our security guide covers the wider defensive picture.

Who makes what: the hardware wallet landscape in 2026

Seven names cover most of what a UK buyer will meet. Trezor shipped the world's first hardware wallet in 2014 and remains the open-source standard bearer; its current Safe range runs from about $59 to about $249, and our Trezor backup guide covers the specifics. Ledger, from France, is the biggest seller, with polished apps and devices from about $79 to about $399, though parts of its software are closed source, which some holders mind; see our Ledger guide. For the security-focused, Canada's Coldcard is the bitcoin-only reference device, about $189 for the Mk5, covered in our Coldcard guide, while Blockstream Jade offers fully open-source devices from about $79, covered in our Jade guide. Switzerland's BitBox02 Nova, about $159 with a bitcoin-only edition, is an easy middle path; our BitBox02 guide has details. Keystone's 3 Pro, about $149, signs over QR codes with no cable at all; see our Keystone guide. And Tangem takes a different route entirely: NFC cards from about $55 with no seed phrase shown by default, a trade-off our Tangem guide explains. Whichever you choose, order it new, direct from the maker or an official reseller.

The backup that survives you

There is one gap even a flawless backup leaves open. Everything in this guide protects your bitcoin while you are alive and sharp. If you die, or lose capacity, a steel plate hidden brilliantly becomes a steel plate lost brilliantly. Your family cannot use words they cannot find, and they cannot find what nobody ever told them exists. So finish the job. Keep a plain-language note, stored separately from the seed itself, explaining what you hold and where the backup lives, and make sure the right person knows that note exists. Then deal with the legal and practical side properly: our guide to crypto inheritance planning walks through the UK specifics, and the free inheritance scorecard will show you, in a few minutes, exactly where your own arrangements would fail today.