Weak signal
1. Too far from network transmitting tower.
Try again from another location.
2. Network congestion.
Try calling at a later time.
Echo or degraded sound quality
1. Regional problem caused by a bad network
relay.
Hang up and redial as this may switch to
another network relay.
Failure to add a contact
1. Phonebook memory full
Delete contacts to free up memory.
Failure to set a function
1. Network operator does not support the
function or the user has not ordered the
service
Contact the network operator.
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