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SIM card error
- SIM card metal surface dirt, SIM cards with a clean cloth to wipe the metal contact points.
- SIM card is not installed, the description of the SIM card is properly installed in accordance
with the user manual.
- SIM card is damaged, contact your network service provider.
Unable to connect to the network
- Weak signal to a strong signal to retry.
- Beyond the network coverage area of the network service provider.
- SIM card is invalid, contact your network provider.
Number call can not be set aside
- Please confirm whether pressing the dial key after dialing.
- Please confirm whether arrears banned call.
- Please make sure the UIM is valid.
- Please confirm whether the call barring function.
Call quality is poor
- Please check whether to adjust the volume inappropriate.
- Use of mobile phones in poor reception areas, such as high-rise near or basement, radio
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