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PANews October 14 news: OneKey founder Yishi posted an article discussing how to turn an iPhone into a cold wallet, and stated that the minimum recommendation is to use an iPhone 17 or later model, running iOS 27 or higher, and to replace the device every 1 to 2 years. Yishi emphasized that this is only a personal security recommendation, not Apple's official certification or security guarantee, and that even if older devices are disconnected from the network, it cannot eliminate the risks brought by others obtaining physical access to the phone.