How To Use Secret Codes On Oppo A9 2020 Upd [upd] Official

Type the code as shown, including symbols like * , # , and digits. No need to press "Call" — the menu usually opens .

Use these codes to verify that specific hardware components are functioning properly. They are invaluable for troubleshooting.

. Displays your device's unique identification numbers. *#*#4636#*#*

: Displays your device's unique identification numbers. *#899# how to use secret codes on oppo a9 2020 upd

Displays advanced usage statistics, Wi-Fi status information, and deep battery health metrics. 5. Regulatory and SAR Information Code: *#07#

| Code | Hardware Tested | |------|-----------------| | *#*#0289#*#* | Audio—speaker and microphone playback test | | *#*#0842#*#* | Vibration motor and backlight | | *#*#0588#*#* | Proximity sensor (detects when your face is near the phone during calls) | | *#*#2664#*#* | Touchscreen test | | *#*#232338#*#* | Wi-Fi MAC address display | | *#*#1575#*#* | GPS functionality test | | *#*#232331#*#* | Bluetooth hardware test | | *#*#7262626#*#* | Field test mode (network and signal diagnostics) | | *#*#64663#*#* | Comprehensive hardware test: version, sensors, SIM, WLAN, Bluetooth, battery, OTG, radio, speakers |

*#899# - Opens the main diagnostic menu for manual hardware tests. Type the code as shown, including symbols like

: Provides hidden statistics for your Wi-Fi , Network , and Battery usage .

each component behaves properly by pressing "Pass" or "Fail" based on the test results. 3. Executing a Manual Test Select "Manual Test" from the primary screen.

Launches logs for network drops, system lag, and GPS tracking. *#888# Shows mainboard version and structural production history. Maximum SAR Certification *#07# They are invaluable for troubleshooting

Provides advanced information about the battery, Wi-Fi status, and app usage. *#*#225#*#* Calendar Info

This is the most vital code for hardware troubleshooting. It opens a menu to test the touchscreen, display, audio, sensors, and camera.