Huawei U3900 - Troubleshooting; Battery Charging Issues; Phone Power On Issues; Call and Reception Problems

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12 Troubleshooting
If you encounter any problems while using your phone, refer to
the following table for potential solutions. If the problems persist,
contact your service provider or local device retailer.
Problem Ensure That…
The battery isn't
charging.
The charger is properly connected to
your phone and the power socket.
My phone cannot be
powered on.

There is an adequate amount of
battery power.

The battery is properly installed.

You press and hold for 3 or
more seconds to turn on your
phone.
I cannot make any calls
except emergency calls.

You are within your service
provider's network coverage area.

The call restriction function is
disabled.
Poor call quality.

You have good reception.

If you are indoors, move near a
window for better reception.