Mycelium is a mobile Bitcoin wallet for Android and iOS, although Trezor is curently supported only on Android device.
Trezor user manual
Before you can start using Mycelium with your Trezor, make sure you have an OTG cable for connecting Trezor to your phone or tablet. Using Trezor with Mycelium is pretty straightforward.
Importing account from Trezor
To import a Trezor account into Mycelium, go to Accounts tab, select Add New Account (key icon) > Advanced > Trezor. Now, connect your Trezor via OTG cable and confirm the access. Enter your Trezor PIN (and also passphrase, if you have previously enabled passphrase feature) and wait until Mycelium loads all your Trezor accounts.
Note that PIN is required only once per Trezor connection session.
Select Trezor account the list to import it into Mycelium, give it a name and wait until Mycelium synchronizes all the transactions and balance. If you need to import more accounts, repeat the steps above. To import a new empty Trezor account, select Import next unused account below Trezor account list.
Without Trezor device connected, imported accounts work in watch-only mode. You can check total balance, transaction history and display next unused receiving address, but you cannot send any transaction.
Sending transaction from imported account
To send a transaction from Trezor account you need to connect your Trezor. Select Send from Balance tab and enter recipient address and amount. Hit the Send button, check the transaction on Trezor screen and confirm it.
Sending transaction from Trezor directly
You can also send the transaction directly from Trezor using Mycelium without importing it first. Simply connect your Trezor and select Cold Storage from app menu and choose Trezor. After Mycelium loads your Trezor accounts, select the one you want to spend from, enter recipient address and the amount and finalize the transaction by checking and confirming it on Trezor.
Importing watch-only accounts from Trezor Wallet
If you want to use Mycelium as a watch-only wallet for your Trezor, you can import accounts directly from Trezor Wallet without connecting the device.
In Trezor Wallet, click on the name of your Trezor and in Basic settings, click on Show XPUBs. Select the account you want to import into Mycelium to reveal QR code with account public key.
In Mycelium, go to Accounts tab, select Add New Account (key icon) > Advanced > Scan and scan QR code from Trezor Wallet to import the account. Give it a name and wait until Mycelium synchronizes it.
After that, you will be able to check balance, transaction history and display next unused receiving address.
Properties and Features
|Languages||✔||English, Español, Deutsch, Français, Русский + more|
|Address Book||✔||Manage contact list of receiving and sending addresses|
|Labelling||✔||Add comments and labels to accounts and transactions|
|Basic Setup||Generate new wallet with recovery seed, set PIN and label device|
|Safe Recovery||Recover Trezor by safely entering your recovery seed (12, 18 or 24 words)|
|Simple transactions||✔||Sign transaction with Trezor and confirm address and amount on display|
|Multisig transactions||Sign multisignature transaction with Trezor|
|Hidden Wallets||✔||User can access hidden wallets each behind arbitrary passphrase|
|Multiple Accounts||✔||Capable of creating and working with multiple accounts|
|Smart PIN Matrix||✔||Keylogger protection, displaying PIN matrix on Trezor's display|
|Watch-only mode||✔||Remembering account, generating new receiving address with Trezor disconnected|
|Show on Trezor||Phishing protection, validation receiving address on Trezor|
|Change PIN||User can change Trezor's PIN|
|Change Name||User can change Trezor's name|
|Custom Homescreen||User can upload personalized default screen|
|Update Firmware||Notify user and update firmware when a new version is available|
|Wipe device||Erase private keys from Trezor|
|Sign Message||Securely sign short text|
|Verify Message||Securely verify short text|
|Fast Recovery||Recover by directly loading seed into Trezor, fast but less safe way to recover wallet|
|Wallet Encryption||Wallet can be decrypted and opened using Trezor only|
|Sign in with Trezor||Trezor is used for online authentication without using username and password|