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I can't make voice calls

If you can't make voice calls, follow these instructions to solve the problem.
We found 9 possible solutions to your problem. Click Start guide to see the solutions.

You can select which network modes your mobile phone can use, eg. 3G or GSM. Your choice determines the data speeds you can achieve.

Step 1 of 6

Find "Network mode"

Slide your finger down the display starting from the top edge of your mobile phone.
Tap the settings icon.

Step 2 of 6

Find "Network mode"

Tap More networks.

Step 3 of 6

Find "Network mode"

Tap Mobile networks.

Step 4 of 6

Find "Network mode"

Tap Network mode.

Step 5 of 6

Select network mode

3G (UMTS) or 4G (LTE) enables you to achieve higher data speeds than when using 2G (GSM). If you select LTE/WCDMA/GSM (auto connect), your mobile phone automatically switches between the three network modes provided you're within range of a 4G network. If you select WCDMA/GSM (auto connect), your mobile phone automatically switches between the two network modes provided you're within range of a 3G network. If you select WCDMA only, your mobile phone can only connect to 3G networks. If you select GSM only, you can't achieve high data speeds.

Tap LTE/WCDMA/GSM (auto connect), WCDMA/GSM (auto connect), WCDMA only or GSM only.

Step 6 of 6

Return to the home screen

Tap the Home key to return to the home screen.

Swipe right for the next step

Tap anywhere to dismiss

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