: Push notifications (iMessage, FaceTime, and app alerts) often fail to work because the device is not officially activated with Apple's servers.
But if Apple refuses to help (common for a 15-year-old device) and you have proof of ownership, the tools above will resurrect your iPhone 4 from its digital grave. iphone 4 ios 7.1 2 icloud bypass
The only permanent and fully functional way to remove the lock is through official channels. : Push notifications (iMessage, FaceTime, and app alerts)
: 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
Limited access to browser, some apps – no iCloud services, phone calls, or push notifications .