A cold wallet ≠ an old phone with no internet connection. What hardware wallets actually solve is keeping private keys on the device while still allowing you to sign securely for dApps. An offline iPhone can’t even connect to dApps, making it useless for DeFi.
The classic model for cold signing with general-purpose hardware is the Bither wallet: the online device broadcasts, the offline device signs, and QR codes pass messages between them. Bitpie, from the same Wenhao, shifted its focus and is still around today.
The classic model for cold signing with general-purpose hardware is the Bither wallet: the online device broadcasts, the offline device signs, and QR codes pass messages between them. Bitpie, from the same Wenhao, shifted its focus and is still around today.