User's Manual

User Manual for NEC N5105
第 15 页
 If you need to take out SIM card, please first turn off mobile phone and take out the battery, then remove
SIM card.

Note: These pictures may not be exactly the same as the real ones and are for reference only.
Please follow that on real ones.
1.2.3 Unlocking for SIM card
To prevent from illegal use, SIM card adopts PIN (personal identification number) code to encrypt for
protection. When selecting to use this function (refer to 4.4 chapter), when you turn on the mobile phone each
time, you must input PIN code, so you can unlock SIM card , then you can send or answer calls. A user can
also remove SIM card protection.(refer to 4.4 chapter)
 Hold down Pwr to turn on the mobile phone;；
 Input PIN code, press left function key to confirm. For example: if PIN is set as 1234, then input as
follows:
1 2 3 4 confirm
If you input wrongly for continuous three times, then your SIM card will be locked, the mobile phone will
query PUK code. Please refer to 4.4 chapter.
Especially note：
Your network operator will set a standard PIN number (from 4 bits to 8 bits)
for your SIM card, you should change it to your private password as rapidly as
possible.
1.2.4 Connect to network
After SIM card is decrypted successfully, the mobile phone will search your registered network or local
available network automatically(display “network is connecting, please wait for a while” in the screen). Once
connection is successful, the network mark for the network operator will appear at the top of the screen.
Currently your mobile phone is in idle state, you can send or answer calls.
Note: After being used for sometime, it will automatically send a message enclosed with the information
of your phone to the server, which make it more convenient for the manufacturer to provide better services for
you.
1.3 Plugging and Unplugging the earphone
Plug the earphone into the jack on the right side, the direction is as the picture below. Slightly
pull the earpiece to unplug it.