UP TO DATE

First enable the Developer Options menu by going into Settings / About phone, and tapping the build number 7 times. If it doesn't work, you can search "enable developer options" with your phone model on internet.
Then go into Settings / Developer Options, and enable USB debugging.

1. Connect to the Wi-Fi network
2. Bluetooth : Off
3. NFC : Off
4. Settings / Display :
   • Brightness level : 0 %
   • Adaptive brightness : Off
   • Sleep : after 30m
   • Screen rotation : Off (Portrait)
5. Settings / Sound : Disable all sounds
6. Settings / System / Gestures : Disable Quick launch Camera
7. Disable notifications
8. Disable Google Assistant (Ok Google)
9. Settings / Battery :
   • Power saving mode : Off
   • Ultra Power saving mode : Off
   • App power saving / detail : Off
10. Settings / Security :
    • Screen Lock : None
    • Location : Off
11. Settings / Security / Unknown sources : On
12. Chrome : Close Chrome. Go on settings / app / Chrome and clear all data on storage. On Welcome page, uncheck the 'help make chrome better ...' and click on 'Accept & continue' button.  Then Turn off sync if a gmail account is detected. Then kill Chrome and reopen it and click on 'No, thanks' on Browse faster popup.
13. Chrome Settings / Home Page : Off
14. Other Security settings
    • Security policy update
      • Automatic update : Off
      • Wifi only : Off
15. Send security reports : Off
16. Usage data access
    • Google Play Services
      • Allow usage tracking : Off
    • Google Play Store
      • Allow usage tracking : Off
    • Smart Manager
      • Allow usage tracking : Off
17. Google Play (skip if no Google account is configured)
    - Notifications : Off
    - Auto Update apps : Off
    - Update Google services (otherwise the update popup will show up)