Guide for the Sony Xperia Z3 - Troubleshooting - I can't make voice calls (Cause 4 of 9)

Step 1 of 6

Find "Network mode"

Slide two fingers down the display starting from the top edge of your phone.
Press Settings.

Step 2 of 6

Find "Network mode"

Press More....

Step 3 of 6

Find "Network mode"

Press Mobile networks.

Step 4 of 6

Find "Network mode"

Press Network mode.

Step 5 of 6

Select network mode

Press 3G only, 2G only, 3G (preferred)/2G or 4G (preferred)/3G/2G.

Step 6 of 6

Return to the home screen

Press the home icon to return to the home screen.

1 Find "Network mode"

Slide two fingers down the display starting from the top edge of your phone.
Press Settings.

Press More....

Press Mobile networks.

Press Network mode.

Press 3G only, 2G only, 3G (preferred)/2G or 4G (preferred)/3G/2G.

Press the home icon to return to the home screen.