Ufone U509, Руководство пользователя

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Cannot access to network

The signal is weak , please move to the place where the signal is strong
and retry.

Beyond the coverage of the network of the network sever.

SIM card is invalid, please contact with your network
supplier.
Cannot dial out

Please confirm whether the dial key send is pressed after the number is
dialed.

Please confirm whether the call is barred due to owned toll.

Please confirm whether the SIM card is valid or not.

Please confirm whether the call restriction function is set UP.

Please confirm whether the fixed dial function is set UP.
Bad call quality

Check whether the volume is adjusted appropriately.

Use the phone at the place where the receiving quality is not good, such
as near to the building or in the basement where the radio wave cannot
reach.

Use the phone at the peak time,such as at the time of going on/off the
duty, the channel is congested.
Contact cannot call you

Please confirm that the phone is powered on and is unlinked with
network.