How To Use Secret Codes On Oppo A9 2020 Upd |best| Jun 2026

: Displays the Specific Absorption Rate (radiation level) for your specific model. Specific Hardware Diagnostic Codes

: Tap the Phone icon located on your home screen. Do not use downloaded VOIP apps (like Skype or WhatsApp); codes only trigger from the original carrier dial pad. how to use secret codes on oppo a9 2020 upd

| Code | Function | What It Does | | :--- | :--- | :--- | | | Android Testing Menu | A deep menu with information on your phone's battery, Wi-Fi, and network usage. You can also change the preferred network type here. | | *#808# | Manual Test Mode | Provides an interactive menu to manually test the screen, speakers, microphone, camera, and other key hardware components. | | *#807# | Automatic Test Mode | Runs an automated, comprehensive test of your phone's hardware, including the display, vibration motor, and both front and rear cameras. | | *#802# | GPS Test | Performs a TTFF (Time To First Fix) GPS test to check satellite connectivity. | | *#899# | After-Sales/Main Test | A comprehensive diagnostic suite often used by service centers. On many newer Oppo phones, this is the primary gateway to the full Engineer Mode, now often labeled "AfterSale". | | *#2663# | TSP / TSK Firmware Update | Used to update the firmware of the touchscreen panel (TSP) or touchscreen key (TSK). | | *#*#1472365#*#* | GPS Test (Quick) | Another code for a quick test of the GPS module. | | *#0*# | General Test Mode | A quick menu for testing the basic functions of the screen and sensors. | : Displays the Specific Absorption Rate (radiation level)

To use secret codes on your , open the Phone (Dialer) app and type the specific sequence of numbers and symbols. Most codes execute automatically once the final character (usually # ) is entered, without needing to press the call button. Essential Secret Codes | Code | Function | What It Does

This shows the Specific Absorption Rate (SAR) value. It tells you the exact level of radio waves your phone sends out. 6. Send System Feedback Code: *#800#

Here are some examples of how you can use these secret codes: