OneKey founder recommends using iPhone 17 or newer models as crypto cold wallets
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AT A GLANCE
OneKey founder Yishi recommends that iPhone the minimum requirements for a cold wallet include iPhone 17 and iOS 27。
Article
⚡️OneKey Founder: Can use iPhone as a crypto cold wallet, with the minimum threshold requiring iPhone17 and iOS 27 BlockBeats news,October 14, OneKey Founder Yishi posted about how to turn iPhone into a cold wallet, stating that being offline alone cannot defend against the risk of physical extraction by forensic equipment; the minimum security threshold should be a 27 or later iPhone 17 or newer, with device migration required every 1 to 2 years.
Yishi said that the memory integrity enforcement technology (A19) introduced by the MIE chip can effectively improve vulnerability defenses, while the device's “Before First Unlock” (BFU) state after shutdown is more secure than the “After First Unlock” (AFU) state. Therefore, offline storage should involve shutting down completely; seed phrases should never be stored in Notes or Photos, and a strong random password of at least 12 characters should be used. For the long-term storage of large amounts of assets, it still recommends prioritizing a standalone dedicated hardware signing device.
Original link https://m.theblockbeats.info/flash/371717
Key points
01
OneKey founder Yishi said that iPhone can be converted into a crypto cold wallet.
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Yishi said that the minimum security threshold should be a 27 or later iPhone 17 or newer model.
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Yishi recommended migrating devices every 1 to 2 years.
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Yishi said that the A19 chip's memory integrity enforcement technology (MIE) can effectively improve vulnerability defenses.
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Yishi said that the “Before First Unlock” (BFU) state after the device is shut down is more secure than the “After First Unlock” (AFU) state.
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Yishi recommended shutting down completely for offline storage, not storing seed phrases in Notes or Photos, and using a strong random password of at least 12 characters.
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For the long-term storage of large amounts of assets, Yishi still recommends prioritizing a standalone dedicated hardware signing device.
AI-assisted interpretation
The following is analysis, separate from reported facts. Verify important claims independently.
This is a security recommendation concerning the custody of crypto assets. According to Yishi, a newer iPhone, a newer system, complete shutdown, and a strong password may help reduce some risks, but dedicated hardware signing devices are still recommended for large amounts of assets.
Why it matters to readers
It reminds users that taking a phone offline does not mean absolute security; the device model, system state, password, and method of storing seed phrases all require attention.
If you handle crypto assets, do not store seed phrases in your phone's Notes or Photos; the custody method for large amounts of assets should be chosen carefully.
Risks and unknowns
The material does not provide a direct original post link from Yishi.
The material does not provide independent research to verify MIE、BFU or the actual protective effect of this device solution.
“iPhone being usable as a cold wallet” and the related security threshold are Yishi's public statements and cannot be taken to confirm applicability to all large-asset scenarios.
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