User's Manual

12
y y UIM card is not installed, the description of the UIM card
is properly installed in accordance with the user manual.
y y UIM card is damaged, contact your network service
provider.
Unable to connect to the network
y y Weak signal to a strong signal to retry.
y y Beyond the network coverage area of the network service
provider.
y y UIM card is invalid, contact your network provider.
Number call can not be set aside
y y Please confirm whether pressing the dial key after dialing.
y y Please confirm whether arrears banned call.
y y Please make sure the UIM is valid.
y y Please confirm whether the call barring function.
Call quality is poor
y y Please check whether to adjust the volume inappropriate.
y y Use of mobile phones in poor reception areas, such as
high-rise near or basement, radio waves can not be effectively
communicated.
y y The use of mobile phones in call-intensive period, as
indicated in the commuting time line congestion caused not
call.
Contacts can not call you
y y Make sure the phone is switched on and connected to the
network.
y y Please confirm whether due to arrears incoming banned.
y y Please confirm the UIM card is valid.
Contacts can not hear you
y y Make sure that the microphone is turned on.
y y Keep the phone the lower part of the microphone close to
your mouth.
Standby time is short
y y Standby time and the network system is set, and may be
in a poor reception region. When no signal is received, the