Download App Updates
Make sure you update your applications before you download the Android Pie update.
Samsung's updated many of its applications with support for Android Pie and the new One UI. These updates are essential.
Keep in mind you'll need to update apps like Calculator, Samsung Internet, Samsung Health, Samsung Notes, Samsung Members, and Samsung Pay individually.
Samsung's updates deliver new features and they'll help these apps maintain strong performance once you've moved your phone to Android Pie. Apps that haven't been optimized for Android Pie/One UI might not work properly after you move from Android Oreo.
You'll also want to download updates for your third-party applications but you'll want to read reviews from Android Pie users before you install a new version on your device.