By default, all Android should download Application via Google Play Store; on Xiaomi devices, if China ROM by default is download the Apps via Mi Market. By enable Unknown Sources option it allow user to download Apps outside of Mi Market or Play Store, for example installing third party apps or latest updated apps from Apk Mirror and etc.
Here is how to enable Unknown Sources on Xiaomi devices.
- Go to Settings and look for Additional Settings.
2. Tap on Privacy
3. Toggle Unknown sources to enable or disable the option.
You can now proceed to download third party apps like Pokemon Go? Or follow through our guide on How to Install Google Play Store and Services on Xiaomi Devices.