12
UIM 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.
UIM 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 waves can not be effectively
communicated.
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
Make sure the phone is switched on and connected to the
network.
Please confirm whether due to arrears incoming banned.
Please confirm the UIM card is valid.
Contacts can not hear you
Make sure that the microphone is turned on.
Keep the phone the lower part of the microphone close to
your mouth.
Standby time is short
Standby time and the network system is set, and may be
in a poor reception region. When no signal is received, the
phone will continue to launch in order to find the base station,
consume a lot of battery power, resulting in shorter standby
