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)