How To Use Secret Codes On Oppo A9 2020 Upd !!install!! File

If you are on a very new 2026 patch and codes are not working, it may be due to:

*#8778#

Since the OPPO A9 2020 runs on a MediaTek (Snapdragon 665) processor, this is the most powerful code for accessing hardware tests (sound, screen, sensors, etc.). how to use secret codes on oppo a9 2020 upd