The Android 10 update for the Galaxy A7 (2018) carries firmware version A750FXXU4CTBC and has a file size of 1336.49MB. The software update also brings One UI 2.0 and the March 2020 Android security patch to the smartphone. The update brings the usual Android 10 and One UI 2.0 features to the Galaxy A7 (2018), including improved Dark Mode, tweaked UI and icons, and more.
The official changelog mentions an improved Dark Mode with enhanced colors, darkened wallpapers, darkened alarms, and darkened widgets. There are tweaked icons and colors, smoother animations, Google's UI navigation gestures, a new way to access the one-handed mode, and better text over bright or dark wallpapers. Stock apps have received new features and UI improvements.
You should be able to see a pop-up notification for the Android 10 update on your Galaxy A7 (2018). If you haven't received the notification, you can check for the update manually by navigating to Settings » Software update » Download and install on your phone.
