Some users have experienced an issue where upon installing the Global iOS filter, they are asked to verify their Apple ID with a code sent via SMS/text. Because this code comes in before the setup is complete, it is impossible to retrieve it from the device at this point. If you have another iOS device signed into the same Apple ID, you can verify and get your code from it. If not, follow these instructions to get your Apple ID verified.
1. Go back to the Apple ID screen, but instead of entering your Apple ID, choose "Don't have an Apple ID or forgot it?", then "Set Up Later in Settings", and then "Don't Use".
2. Now go ahead and complete the rest of the set up.
If you have already received a Verification Code, open Messages and make a note of it. If not, then you'll receive one during the following sign-in process.
Next, open Settings, scroll down to iCloud, enter your Apple ID, and then the verification code when prompted.