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If you have problems receiving voice calls, there may be several causes of the problem.
Press the Navigation key.
Select Settings.
Select Calls.
Select Call setup.
Select Call divert.
Select the required divert type.
Select Activate.
Select Set number.
Key in 901 and press the Navigation key.
Press Disconnect to return to the home screen.
Select Cancel diverts.
Remove the battery and leave it out for 10-15 seconds.
Insert the battery and turn on your phone again.
See how to insert the battery and turn on your phone.
Select Call barring.
Select the required barring category.
Select the required barring type.
Key in your barring password and press the Navigation key.
Select Deactivate.