Old iPhone vs Hardware Wallets: The Crypto Storage Debate Heats Up

An unexpected debate has emerged in the crypto world: Can an old iPhone serve as a better crypto wallet than traditional hardware options? According to ZachXBT, a known on-chain investigator, iPhones dedicated solely to holding digital assets might outperform hardware wallets in security tasks. Roman Storm, Tornado Cash developer, backs the idea but stresses a missing critical feature, BIP39 passphrase support. This passphrase creates an added layer of security by hiding your real wallet behind a decoy.

Recent data stakes. Bybit suffered a $1.5 billion hit in February 2025 due to a transaction trick, even as the keys stayed uncompromised. On the security front, personal wallet compromises have exploded, with 158,000 incidents reported in 2025, compared to 2022. When your 12 to 24-word seed phrase is compromised, the additional passphrase can keep thieves from accessing the actual funds. But iPhones lack this capability, unlike Trezor and Ledger that make it standard.

While Storm sees potential in mobile wallet upgrades, adding passphrase support isn't trivial. Users risk locking themselves out if they forget passphrases. And don't overlook the nuanced risks of using a general-purpose device like an iPhone. As Trezor's Danny Sanders puts it, these devices have too many vulnerabilities, like zero-click exploits, risking unwanted entry. Phones also face physical constraints, an iPhone stored for years may suffer battery degradation.

So, what's the path forward? If mobile wallets like MetaMask and Trust Wallet add passphrase support, millions of old phones could transform into viable crypto vaults. However, the security risks associated with iPhones shouldn't be underestimated. The licensing race in Hong Kong is accelerating, but secure crypto storage, caution is the best policy.