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    Samsung Galaxy S6

    Troubleshooting

    If your device isn't working properly, you can try several solutions to solve the problem.
    In most cases you can solve the problem by following these guidelines:

    I can't make voice calls

    Cause 5 of 9: Your mobile phone is set to connect to 3G networks only

    If your mobile phone is set to connect to 3G networks only, it can't find a network if you're in an area with poor or no 3G network coverage.

    Solution: Change network mode allowing your mobile phone to connect to both 2G and 3G networks.

    Step 1 of 5

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

    Step 2 of 5

    Press Mobile networks.

    Step 3 of 5

    Press Network mode.

    Step 4 of 5

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

    Step 5 of 5

    Press the Home key to end the session and return to the Home screen.

    1 Find " Network mode"

    Slide your finger down the display starting from the top edge of your mobile phone.
    Press the settings icon.
    Press Mobile networks.
    Press Network mode.

    2 Select network mode

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

    3 Return to the Home screen

    Press the Home key to end the session and return to the Home screen.

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