OneKey founder Yishi published a post exploring how to convert an iPhone into a cold wallet, stating that offline status alone cannot defend against physical extraction by forensic devices; the minimum security threshold should be an iPhone 17 or newer model running iOS 27 or higher, with device migration required every 1 to 2 years.
OneKey founder suggests using an iPhone as a cold wallet, recommending the iPhone 17 and iOS 27 as the minimum security threshold.
TechFlowShare
Summary
OneKey founder Yishi suggested using iPhones as cold wallets, noting that the Fear & Greed Index remains volatile. He warned that offline storage alone is insufficient to protect against forensic attacks. Yishi recommended using iPhone 17 or newer with iOS 27 or higher, and suggested replacing devices every one to two years. Altcoins to watch may benefit from stronger security practices.
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