Here’s a method on how to enable Night Mode settings on Mi A1 which requires root. The feature is similar to the one on Google Pixel smartphone.
Official Mi A1 firmware: the latest MIUI 10 Recovery and Fastboot ROMs for all regions (1), direct from Xiaomi's servers with MD5.
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Activate Hidden Night Mode on Xiaomi MiA1
- Root is required.
- Download Root Explorer
- Download MT Manager
- Open Root explorer and go to “/system/framework”, find framework-res.apk file and copy it to any other folder.
- Start MT Manager and locate previously copied framework-res.apk file.
- Also open resources.arsc file in arsc editor.
- Go to “android/bool/bool”, search for the “nightDisplay”, look for “config_nightDisplayAvailable” and change the value from “false” to “true”.
- Close the arsc editor, confirm changes and confirm update of “resources.arsc”. Now the framework-res.apk will be repacked and original file backup will be saved as “framework-res.apk.bak”.
- Open Root Explorer once again, take the updated “framework-res.apk” and replace one in the “/system/framework” folder.
- Your device will soft reboot, probably you’ll see some error messages.
- Reboot your phone manually, go to “Settings” > “Display” and look for the “Night mode” feature which is now will be available.

