This change applies to all iPad models and all iPhone models without a Home button:
1. From the Home Screen or Lock Screen of iPhone or iPad, look at the top right corner of the screen to where the wi-fi and battery indicator are located
2. Swipe down from the top-right corner of the screen to access Control Center in iOS 12 on iPhone or iPad
3. Control Center will appear as normal, except it comes from the top right corner of the display