User's Manual

User's manual
Unable to c
onnect to th
e network

n signal weak, please move to the stron
g signal to retry;
 outside the network service provider's net
work to cover;
 SIM card is invalid, contact your network
provider;
Boot time, t
he display i
nformation
 check the SIM card (SIM card inserted),
whether SIM card is installed correctly
 phone lock password, set the phone loc
k, phone password must be entered prior
to use;
 enter the PIN, chose to enter the PIN ev
ery time you turn, you must enter the PI
N code;
 PUK code: the connection three times t
o enter the wrong PIN code will lock the
SIM card, you should enter the network
operators to provide the PUK code;
Poor call q
uality

Check to see if volume adjustment inapp
ropriate
 use of mobile phones in poor reception
areas, such as high-rise near or baseme
nt, radio waves can not be effectively co
mmunicated;
 use of mobile phones in the call-intensive
period, the above working hours, line co
ngestion caused not call;
44