Introduction
This guide explains how to create a MetaMask wallet and how to manage multiple accounts inside it. It covers the core steps on desktop and mobile, explains the difference between creating additional accounts and creating separate wallets (different seed phrases), and offers practical security tips gathered from hands-on use. I’ve been using MetaMask daily for months for small DeFi trades and testing new dApps, and I’ll share what tends to cause friction (and how to avoid it).
Create a MetaMask wallet: Step-by-step (Desktop & Mobile)
Desktop (browser extension)
- Install the extension from the browser’s official add-on store (or see the install extension guide).
- Click the extension icon, choose “Create a Wallet.”
- Set a strong local password (this only encrypts your extension vault on that device).
- Reveal and write down the seed phrase exactly as shown. Store it offline (paper or metal). And yes, writing it down feels old-school, but it’s still the safest option.
- Confirm the seed phrase when prompted.
After these steps you’ll have your initial account (Account 1) and can start receiving tokens, connecting to dApps, and switching networks.
Mobile (iOS/Android)
- Install the official mobile app (see install the mobile app).
- Open the app and tap “Create a Wallet.”
- Create a PIN or enable biometric lock for convenience.
- Back up the seed phrase exactly as above.
Mobile and desktop can be synced (or used separately). See mobile-desktop-sync for options.
Accounts vs wallets: what’s the difference?
People often confuse "accounts" and "wallets." MetaMask is an HD wallet that derives many accounts from a single seed phrase. Each account has its own address and private key, but all come from the same recovery phrase. If you want separate seed phrases (totally independent wallets), you need to create a new vault (usually by using a separate browser profile or a separate device).
Why does this matter? Because if someone obtains the seed phrase, they can control every account derived from it.
Quick comparison table
| Type |
How it’s created |
Backup scope |
Privacy / isolation |
| Single account (Account 1) |
Created during setup |
Protected by the seed phrase |
Default |
| Multiple accounts (same seed) |
Add “Create Account” in MetaMask |
One seed phrase covers all accounts |
Easier management; lower isolation |
| Separate wallet (different seed) |
New browser profile / new app install and "Create a Wallet" |
Separate seed for each vault |
Higher isolation; separate backups required |
How to create another MetaMask account (same seed phrase)
This is the most common need: you want another address for testing, separating funds, or handling airdrops.
Steps:
- Open MetaMask, click the account circle top-right.
- Choose “Create Account.”
- Give it a name and confirm.
That creates a new address derived from the same seed phrase. Transactions are signed with a different private key, but the same seed phrase restores them all. If you need to import an address created elsewhere, use import private key.
How to create a second MetaMask wallet (different seed phrase)
Want full separation (different seed phrases)? This is useful for a “hot” daily wallet and a separate testing/burner wallet.
Options:
- Create a new browser profile (Chrome, Firefox) and install the extension there; then create a new wallet. That keeps the vault isolated without touching your existing seed phrase.
- Use a separate mobile device or a separate mobile app profile.
But if you reset the extension and then create a new wallet on the same browser profile, make sure you have backed up any existing seed phrase first (see backup-recovery-seed).
Which should you choose? If you value convenience, multiple accounts under one seed are simpler. If you want compartmentalization (e.g., small hot wallet vs long-term holding), separate seed phrases are better.
Creating a burner wallet for testing
A burner wallet is a low-value wallet used for tests, connecting to unknown dApps, or trying new bridges. Quick ways to make one:
- Create a new account under your main seed phrase (fast, minimal setup).
- Create a separate wallet in a different browser profile (safer isolation).
If you use the account-under-same-seed approach, remember that a compromised seed phrase compromises the burner too. If you need true isolation, use a different seed.
Backup, recovery and security best practices
- Seed phrase = full control. Store it offline (paper or metal). Do not store it in cloud notes.
- Never share your seed phrase. MetaMask or any legitimate dApp will never ask for your seed phrase to connect.
- Consider hardware wallet integration for larger balances (see connect-ledger).
- Revoke unlimited token approvals periodically (see token-approvals-revoke).
When I first set this up I approved an unlimited token allowance for a DEX and later revoked it after realizing the risk. Learn from my mistake: approve only what you need, and use an approval revocation tool.
And if you lose your phone, the seed phrase is how you recover (see lost-phone-recovery). If you haven’t backed up the phrase, recovery may be impossible.
Practical tips from daily use (networks, dApps, swaps)
- MetaMask supports EVM-compatible chains (you can add Polygon, BSC, Arbitrum, Optimism, etc.). See add-polygon and add-bsc-network for examples.
- Mobile has an in-app dApp browser and supports WalletConnect for pairing with many services (see connect-walletconnect).
- For frequent swapping, the built-in swap aggregator saves steps but always check the route and slippage. In my experience the in-app swap is convenient for small trades; for large trades I simulate the transaction first.
- Gas fees and L2 savings matter. Switch to an L2 network when suitable (see layer2-networks).
FAQ
Q: Is it safe to keep crypto in a hot wallet?
A: Hot wallets are convenient and fine for daily activity, but they carry more risk than cold storage. For large holdings, use a hardware wallet (see hardware-wallets-overview).
Q: How do I revoke token approvals?
A: Use MetaMask’s connected site view or a third-party revoke tool and review allowances periodically (see token-approvals-revoke).
Q: What happens if I lose my phone?
A: If you have the seed phrase, you can restore your wallet on a new device using the recovery flow (see backup-recovery-seed). If you don’t have the phrase, funds may be unrecoverable.
Conclusion & next steps
Creating a MetaMask wallet is quick, and adding accounts is straightforward. Which route you take depends on your priorities: convenience (multiple accounts from one seed) or isolation (separate wallets and seed phrases). In my experience, start with small amounts while you learn the workflow, and always back up the seed phrase offline.
Ready to continue? If you need the extension or mobile install steps, start with install-metamask-extension or install-metamask-mobile-app. For account management, check manage-accounts and for backups see backup-recovery-seed. But remember: practice safe habits—approve carefully, revoke allowances, and keep your seed phrase offline.
(Image: [seed-phrase-backup-placeholder])
