Apple Software Update Failed Verification. On your device go to Settings General then tap Software Update. Choose General and select Software Update to see if there is an available iOS update.
The third method to get rid of iPadiPhone software update failed issue is to install and update the iOS version via iTunes a software specially designed and developed to manage all iOS devices. If you see a different certificate authority or the certificate doesnt have a green checkmark indicating that the certificate is valid dont install the package. Otherwise there could be a bug and then cause Apple ID verification failed on iPhone and iPad.
Open Settings on your iOS device.
Click to follow Summary Check for Update Download and Update. Here is how you can check for updates. Make sure you have updated your iDevice to the latest version. Make sure that your computer can communicate with the Apple software-update servers.