: Push notifications (iMessage, FaceTime, and app alerts) often fail to work because the device is not officially activated with Apple's servers.
However, thousands of these devices sit in drawers, not because they are broken, but because they are . Specifically, the combination of the iPhone 4 running iOS 7.1.2 presents a unique situation. Why? Because iOS 7.1.2 was the last operating system Apple ever signed for the iPhone 4. You cannot upgrade to iOS 8, 9, or 10. You are stuck at the end of the skeuomorphic era. iphone 4 ios 7.1 2 icloud bypass
: Widely regarded as the most reliable tool for legacy devices like the iPhone 4. It uses a Ramdisk method to delete the Setup.app file, allowing you to jump straight to the home screen. : Push notifications (iMessage, FaceTime, and app alerts)
Tools like Sliver use an SSH ramdisk to delete the setup.app file manually. Once deleted, the phone boots directly to the home screen. You are stuck at the end of the skeuomorphic era
Since the iPhone 4 is an "A4 device," specialized tools can exploit the bootrom to skip the setup screen.
: Generally permanent until the device is restored; free to use. Cons : Requires a Mac to run the software effectively.