Here's how to turn an iPhone into the most secure crypto wallet. 10 steps: 1. Buy the cheapest new iPhone (17e, $699 in the US). Never used. 2. New Apple ID, fresh email, unique password 3. Face ID off. Custom alphanumeric passcode, 12+ characters 4. Lockdown Mode on 5. Erase data after 10 failed passcode attempts: on 6. iCloud backup off, before you install anything 7. Install the wallet from its official site and check the publisher 8. Generate a new address. Write the seed phrase on paper or steel. Never photograph it 9. Send a small test amount first, then move everything 10. Airplane mode, no SIM, no Wi-Fi ever again. Phone in a safe, seed in a different place Skip step 6 or step 8 and the whole setup falls apart.