A post by @cz_binance on X.

Binance founder Changpeng Zhao urged users on X to update their iOS devices, warning that no wallet application can patch the operating system on their behalf. The brief post, aimed especially at those who have deferred updates for some time, framed the reminder around self-custody, noting that holding one's own assets carries a corresponding duty to maintain the underlying device. The message carries no protocol-specific figures, token prices or funding details, and instead leans on the security rationale that outdated mobile operating systems can expose wallet software to vulnerabilities it cannot fix itself. The takeaway for crypto holders is procedural: device hygiene is part of custody hygiene, and wallet providers' security guarantees stop at the app boundary. What to watch next is whether other exchange and wallet figures amplify the same guidance, and whether iOS update adoption among crypto users becomes a recurring theme in self-custody messaging.