Update this method also works on my Xiaomi Mi 6 running Android 7.1.1
So the new Xiaomi Mi Pad 3 is running Android 7.0, MiUI 8.2.8 was my latest updated. I had many issues trying to get Google Play installed. In the end, I found working APK’s including Contact Sync. In order to make things easier I created a MIUI backup, so you all need to do is download the Mi Pad 3 Google play files backup.
Then extract and move the AllBackups folder to MIUI/Backups on your Mi Pad 3 and restore it via additionals settings, backups.