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The microSIM card is locked.
≥ If [Set up SIM card lock] has been configured, the microSIM card is locked when the unit is turned on.
> Enter SIM PIN code.
The microSIM card is PUK-locked.
≥ Contact your mobile network operator.
The screen is no displayed.
≥ Check that an object is not placed near the proximity sensor, or that the proximity sensor is not covered.
≥ Check that there are no protective films or covers interfering with the touch screen’s functionality.
No sound is heard.
≥ Check that the unit is not in silent mode.
≥ Check that the volume has not been turned down.
Connected Bluetooth devices do not operate.
≥ Check that the Bluetooth device is turned on.
≥ Check that the distance between the unit and the Bluetooth device is within 10 m (33 feet).
≥ Refer to the operating instructions of the Bluetooth device.