How To Use Secret Codes On Oppo A9 2020 Upd Best Site

: Press your device's home button or the back navigation gesture to close out of read-only parameters safely. Inside Engineer Mode ( *#899# )

. Used to report system lags, battery drain, or GPS issues. *#6776#

Whether you are looking to check your IMEI, run hardware diagnostic tests, or delve into the Engineer Mode, this guide will show you how to use these codes on your Oppo A9 2020 (including updated ColorOS versions). ⚠️ Important Precautions Before Starting how to use secret codes on oppo a9 2020 upd

: Opens FCM Diagnostics to view Google Play Services and Firebase connection events.

Changing how your phone connects to cellular towers. : Press your device's home button or the

Provides information about phone, battery, and usage statistics.

Here’s a concise guide on using secret codes (also known as USSD codes or engineering codes) on the , provided your device is running a recent update (ColorOS 11 or later based on Android 10/11). *#6776# Whether you are looking to check your

: 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.

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