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Troubleshooting information 79
There are noises during a call.
Check the following:
• Are you near a strong electromagnetic source (such as a TV, a microwave oven, etc.) during
the call? Move to another location to reduce the interference effects.
• Check the status of signal reception. If necessary, move to another location where reception
is better.
Poor reception.
Check the following:
• The network signal is too weak at your current location. In a basement or near a tall
building, for example, wireless transmissions may not effectively reach the signal.)
• The network is busy at the current time. (During peak times, for example, there may be too
much network traffic to handle additional calls.)
• You are too far away from a base station for your network operator.
Echo or noise.
Check the following:
• Poor network trunk quality on the part of your network operator.
• Poor local telephone line quality.
SIM card error.
Check the following:
• SIM card malfunction or damage.
• SIM card not properly inserted.
• Dirt on the SIM card contacts.
There are echoes when using VoIP (Voice over IP) phone.
Check the following:
Try using VoIP in a more open space or with earphones to get the best reception and quality.