Calls are not connected
Ensure that you have accessed the right cellular network.
Ensure that you have not set call barring for the phone number
you are dialling.
Ensure that you have not set call barring for the incoming phone
number.
Others cannot hear you speaking on a call
Ensure that you are not covering the built-in microphone.
Ensure that the microphone is close to your mouth.
If using a headset, ensure that it is properly connected.
Your device displays network or service error messages
When you are in areas with weak signals or poor reception, you
may lose reception. Move to another area and try again. While
moving, error messages may appear repeatedly.
You cannot access some options without a subscription. For
more information, contact your service provider.
A cellular network or the Internet is often disconnected or
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