OneKey Founder: You Can Use an iPhone as a Cold Wallet, But Only iPhone 17 or Newer Models Are Recommended

Odaily News: OneKey founder Yishi posted on X platform "How to Turn an iPhone into a Cold Wallet."

Yishi stated: "I recommend using an iPhone 17 or newer, running iOS 27 or higher, and replacing the device with a new one every one to two years... I would not use an iPhone 16 or earlier as a device for long-term signing of important asset transactions. Even an iPhone 17 with iOS 27 is only the minimum configuration I can currently accept. For long-term custody of large amounts of funds, I prefer to use a dedicated signing device, which should have a transparent security design and be capable of continuous maintenance and on-device transaction verification. Its firmware, supply chain, and recovery process still require further review. Keeping the phone offline is a precautionary measure. But factors such as hardware, patch level, BFU/AFU status, passcode, and wallet key management determine the actual effectiveness of this precaution."