Method #1. Using Cellular/Mobile Connection or Wi-Fi.

Method #2. Using iTunes.

Method #3. Troubleshooting.

How to Activate an iPhone X XS XS Max and XR - 74How to Activate an iPhone X XS XS Max and XR - 25How to Activate an iPhone X XS XS Max and XR - 37How to Activate an iPhone X XS XS Max and XR - 47How to Activate an iPhone X XS XS Max and XR - 69How to Activate an iPhone X XS XS Max and XR - 94