Level 3 · Module 3.2
Installing Phantom Wallet
Phantom is the most widely used wallet in the Solana ecosystem. This module walks you through the complete setup — including the steps most tutorials skip that matter most.
01 Why Phantom
There are several Solana wallets. Phantom is recommended because:
NATIVE TO SOLANA
Built specifically for Solana. Full support for SOL, all SPL tokens, NFTs, staking, and every major dApp in the ecosystem.
TRANSACTION SIMULATION
Before you sign anything, Phantom shows you exactly what will happen — which tokens leave, which arrive, which approvals you're granting. This feature has saved millions.
MULTI-CHAIN
Also supports Ethereum, Polygon, and Bitcoin. One interface for your entire portfolio.
AUDITED
Open-source code, independently audited by professional security firms. The most tested Solana wallet by far.
02 Desktop Installation
Works on Chrome, Brave, and Firefox. Edge is not supported.
- 1Open your browser and go to phantom.app — verify every character. The URL must be exactly
phantom.app. - 2Click Download and select your browser. You'll be redirected to the official browser extension store.
- 3Click Add to Browser. The phantom ghost icon will appear in your extension bar.
- 4Click the ghost icon → select "Create a new wallet".
- 5Read the terms of service — actually read them — then accept.
- 6Your seed phrase will appear. This is the most important moment in your crypto journey. Proceed to Section 3.
- 7Phantom will ask you to verify the seed phrase by entering the words in the correct order. This confirms you wrote it down correctly.
- 8Set a password. This protects the app on this device only — it does not protect your funds at the blockchain level. The seed phrase does.
03 The Seed Phrase — The Only Step That Matters
Everything else in this setup is reversible. This step is not. Your seed phrase is a list of 12 words. It is the master key to your wallet. Anyone who has it can take everything in it, instantly, irreversibly.
The Right Way to Store Your Seed Phrase
✓ Write each word carefully on paper with a pen ✓ Number each word (word 1, word 2... word 12) ✓ Store the paper in a physically secure location ✓ Consider making a second copy in a different location ✓ Ideal: stamp the words onto stainless steel (fire and water resistant)
Never, Under Any Circumstances
✗ Photograph your seed phrase ✗ Type it into Notes, Word, Google Docs, or any app ✗ Email it to yourself or anyone else ✗ Save it in a password manager connected to the internet ✗ Tell anyone the words — for any reason, ever ✗ Enter it on any website (including what appears to be Phantom) ✗ Screenshot it
04 Switching to Devnet for Practice
Before you ever use your wallet with real money, you should practice on Devnet — Solana's test environment where SOL is free and transactions have no real value.
- 1Open Phantom → click the settings gear icon (bottom right of the wallet window)
- 2Scroll down to find "Developer Settings" or "Change Network"
- 3Select Devnet
- 4Your balance will now show your Devnet balance (starts at 0 — you'll airdrop free SOL in Level 4)
- 5Remember to switch back to Mainnet when you're done practicing. The balances are completely separate.
Mainnet vs Devnet — A Critical Distinction
Phantom defaults to Mainnet. On Mainnet, all transactions are real and irreversible. On Devnet, everything is simulated with valueless tokens. The UI looks identical — only the network indicator (shown at the top of Phantom) tells you which you're on. Always check before transacting.
05 Two Separate Layers of Security
People often confuse these. They are completely different:
PHANTOM PASSWORD
Protects access to the app on your device. If someone finds your unlocked laptop, the password stops them opening Phantom. It does NOT protect your funds on the blockchain.
SEED PHRASE
Protects your funds at the blockchain level. Anyone with your seed phrase can import your wallet into a completely different device and drain everything — without ever needing your Phantom password.
You now have a non-custodial wallet. You are your own bank. That's exactly as powerful — and exactly as dangerous — as it sounds. In the next module we cover the attacks that target wallets exactly like yours.