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Learn about the 2013 iPhone 4 passcode bypass vulnerability, Apple's official response, and how to secure your device against unauthorized access. In early 2013, a significant security vulnerability was discovered that allowed users to bypass the passcode lock screen on the iPhone 4. Having personally tested this exploit during that period to understand the scope of the risk, I found that the bypass relied on specific interactions with the Emergency Call interface. While some community members speculated that the device needed to be jailbroken to replicate the bug, my hands-on testing confirmed that the vulnerability existed on stock firmware, posing a genuine risk to device privacy. The security flaw was officially acknowledged by Apple following widespread reports. As reported by AllThingsD , Apple spokesperson Trudy Muller stated: “Apple takes user security very seriously. We are aware of this issue, and will deliver a fix in a future software update.” If you are resear...