Guide for the OPPO A38 - Troubleshooting - I can't use Wi-Fi calling (Cause 2 of 3)

Step 1 of 4

Find "About device"

Slide two fingers downwards starting from the top of the screen.

Step 2 of 4

Find "About device"

Press the settings icon.

Step 3 of 4

Find "About device"

Press About device.

Step 4 of 4

Update phone software

Press ColorOS. If a new software version is available, it's displayed. Follow the instructions on the screen to update the phone software.

1 Find "About device"

Slide two fingers downwards starting from the top of the screen.

Press the settings icon.

Press About device.

Press ColorOS. If a new software version is available, it's displayed. Follow the instructions on the screen to update the phone software.