Device Guides
I can't make voice calls
This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.
Possible cause 3:
Your mobile phone is set to connect to 3G networks only: Change network mode allowing your mobile phone to connect to both 2G and 3G networks.
List view
1. 1. Find "Network mode"
Slide your finger down the display starting from the top edge of your mobile phone.
Tap the settings icon.
Tap the settings icon.
Tap Mobile networks.
Tap Network mode.
2. 2. Select network mode
Tap LTE/WCDMA/GSM (auto connect), WCDMA/GSM (auto connect), WCDMA only or GSM only.
3. 3. Return to the home screen
Tap the Home key to return to the home screen.