How To Use Secret Codes On Oppo A9 2020 Upd 🔔 ⭐

Some customized firmware (network provider version) blocks secret codes.

Sometimes, third-party dialers do not handle USSD codes properly. how to use secret codes on oppo a9 2020 upd

: The hidden menu should appear immediately. If it doesn't, try pressing the Call button. how to use secret codes on oppo a9 2020 upd

Before you start typing in codes, please keep these important points in mind to protect your phone and your data: how to use secret codes on oppo a9 2020 upd

– Manual Hardware Test : An alternative engineering menu for specific manual component tests.

These codes will erase data or reset your phone. Before using any reset code, —photos, contacts, documents, and app data.

– IMEI Check : Displays your device’s unique international mobile equipment identity, which is essential for warranty or lost-phone tracking.