The Xiaomi smartphone is automatically kept up to date with app updates from the Play Store to ensure the functionality of the applications. By default, app updates are downloaded over the Wi-Fi network. We can set up the Xiaomi smartphone to download app updates over any network, including mobile data, or disable automatic updating to check for updates manually.

Android 10 (MIUI 12.0)
Step 1:  Open the  Play Store app
Step 2:  Open the  menu
Step 3:  Open the  Settings
Step 4:  Tap on  Auto-update apps
Step 5:  Choose  Over any network, Over Wi-Fi only  or  Don´t auto-update apps
Step 6:  Tap on  Done
  1. Open the Play Store app
  2. Open the menu
  3. Open the Settings
  4. Tap on Auto-update apps
  5. Choose Over any network, Over Wi-Fi only or Don´t auto-update apps
  6. Tap on Done

Xiaomi Instructions