Because the device cannot verify its identity with Apple’s APNs servers, you will not receive push notifications for WhatsApp, Facebook, or email. It becomes a "WiFi appliance" rather than a smart phone.
Remember: If the device has a passcode AND iCloud lock, you must use a Ramdisk to brute force the passcode first (another topic entirely). The Dk method only solves the iCloud portion. Dk Ramdisk Bypass Icloud IOS 9.3.5-10.3.3
: A widely used tool for macOS that handles Ramdisk iCloud bypasses and removal for older devices. Legacy-iOS-Kit : A versatile script-based tool available on Because the device cannot verify its identity with
: Using third-party bypass tools involves running unverified software on your computer. It is highly recommended to use a secondary "burner" PC or a virtual machine. Compatibility Table Device Supported iOS Versions Architecture iPhone 4s / 5 / 5c 9.3.5 - 10.3.3 iPad 2 / 3 / 4 9.3.5 - 10.3.3 iPad Mini 1 9.3.5 - 9.3.6 The Dk method only solves the iCloud portion