On the iPhone 4s, the iCloud lock is tied to the and BLE (Bluetooth Low Energy) address stored on the NAND chip. If you physically replace the NAND chip or reprogram the existing one with a clean serial number (from an iCloud-free donor phone), the lock disappears.
This guide is intended for educational purposes and for unlocking devices you legally own. Bypassing iCloud on a stolen phone is illegal. Always verify the device’s history before proceeding.
Let’s address the elephant in the room:
Tenorshare 4uKey is a popular bypass tool that supports iOS 9.3.6. Here's a step-by-step guide:
You trick the activation server into connecting to a fake Apple server (DNS redirect) which pushes a profile allowing limited access.
The iCloud lock is removed temporarily. You can reboot the phone, but it will relock. To make it permanent, you must keep it in this “tethered” state (always boot with the PC).
The phone rebooted. Instead of the dreaded "Activation Lock" screen, Leo saw the familiar "Slide to Unlock." He swiped, and there they were: blurry photos of a 2012 graduation party. The bypass had worked; the ghost in the machine was finally free.
