OPPO R15 Pro

OPPO R15 Pro

Android 8.1

I can't make voice calls on my OPPO R15 Pro Android 8.1

Cause 1 of 12: The selected network mode is not available

If you've set your phone to use a specific network mode, it can't get a network connection if the selected network mode is out of range.

Solution: Turn on automatic network mode selection.

Step 1 of 6

Find "Preferred network type"

Press Settings.

Step 2 of 6

Find "Preferred network type"

Press Dual SIM & Mobile.

Step 3 of 6

Find "Preferred network type"

Press SIM1.

Step 4 of 6

Find "Preferred network type"

Press Preferred network type.

Step 5 of 6

Select network mode

Press the required network mode.

Step 6 of 6

Return to the home screen

Press the Home key to return to the home screen.

1 Find "Preferred network type"

Press Settings.
Press Dual SIM & Mobile.
Press SIM1.
Press Preferred network type.

2 Select network mode

Press the required network mode.
There may be different network modes available depending on where you are. If you set your phone to the fastest network mode, it will always find the network with the highest data speed and best signal.

3 Return to the home screen

Press the Home key to return to the home screen.

Did this solve the problem?

Yes - All solved No - Go to next cause