To enable double tap to wake on the Mi 4:
- Download the files attached to this post. ‘enable_d2tw.zip’ is the zip file to be flashed to enable the feature.
- Move both files to SD card
- Reboot to recovery
- TAKE NANDROID BACKUP
- Flash ‘enable_d2tw.zip’
- ‘disable_d2tw.zip’ is the file used to disable/remove the feature.
If you experience any difficulty with this procedure, please let us know in the comments below.