Question: how to install mtz file in miui 11?
Answer: Download the theme's . mtz file to your phone., Install the MIUI Theme Editor app above., Tap on the [Browse] button in the app., Find the MTZ file, tap on it to select it., Tap [OK]., Tap [Next], then [Finish]., Wait a moment., A message will pop up, choose [Install], then tap [OK].