When you need to do a testpoint

• Remove Factory Reset Protection (FRP)
• Unlock bootloader
• Unbrick your phone
• Repair or restore protected partitions

What all you will need

• Tweezers or any metal piece to make a joint
• USB Cable [USB Type-C to USB male]

Finding the Test Point on your phone

Remove the back panel of the Huawei Y9 Prime (2019) carefully, check the image below and identify the testpoint, disconnect battery and reconnect, joint the testpoint to any metal part on the phone and connect the USB Cable

Installing the required drivers

Service the phone

Now the phone is ready for service, you can use the tool you like for repair the phone