A hardware wallet keeps its keys on the device. Smartable prepares the transaction, the device shows it on its own screen, and it is signed there — or not at all. The phone never holds the key.
What each device can do
- Ledger — EVM networks, Solana and Bitcoin. A Nano X connects over Bluetooth; a Nano S Plus needs a cable, on Android only.
- Trezor — EVM networks, Solana and Bitcoin. A USB cable or OTG adapter, on Android only.
- Keystone — EVM networks. Read by the phone's camera, by QR code.
On an iPhone, that means a Ledger Nano X over Bluetooth, or a Keystone.
Adding one
Open Wallets and accounts, then Account settings, and choose Connect a Ledger, Connect a Trezor or Connect a Keystone.
- Ledger: unlock it and open the Ethereum app first — or the Solana or Bitcoin app for those accounts.
- Trezor: plug it in and unlock it; Android asks whether Smartable may use it.
- Keystone: on the device, choose to connect a software wallet, and scan the code it shows.
Pick the account to add, then compare its address on the device's own screen before you use it. If the two differ, do not use the account.
Signing
Every transaction from a hardware account is approved on the device. Before you approve, compare what the device shows — recipient, amount, network — with the review in Smartable. If anything differs, reject it on the device.
If a Ledger will not accept a contract call, it may need blind signing turned on in its Ethereum app settings. Turn it on only for a transaction you have checked and meant to make.
Backups belong to the device
Your Smartable recovery phrase does not cover a hardware account. The account is backed up by the device's own recovery phrase. On a new phone, connect the device again rather than looking for it in your Smartable backup.
If your device uses a passphrase, it is entered on the device and never reaches Smartable.
What the app shows
- “Connect a Ledger”
- “Connect a Trezor”
- “Connect a Keystone”
- “Check the address on your Ledger and approve it there. Comparing the two is what makes the hardware worth carrying: this phone could be wrong, and the device cannot be.”
Security note
Never share your recovery phrase, private key, password or device PIN. Smartable will never ask for them or ask you to sign a transaction to “verify” or “recover” your wallet.
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