Verykool R80 - Manual (Page 27)

searching mode or select the network you need from the network list.
Preferences: select and set the preferences of network.
GPRS Connection: you can set GPRS as always connectted or
connected when needed.
Flight Mode: you can set the phone standby profile as Normal Mode,
Flight Mode or Query When Power On.
1.21.4 GPS settings
You can set the mode for receiver, AGPS and time sync.
If you want to use the function of AGPS, you should make it on first and
then to enter the edit screen of AGPS profiles to select the correct data
account from GPRS and active this profile. Thus, you can use the
AGPS function in GPS mode.
1.21.5 Security settings
SIM lock: this function can prevent others from using your SIM card
without your permission. After the SIM card PIN code is activated,
correct PIN code must be input every time when the mobile phone is
powered on; otherwise you can only make emergency call.
Note:
PIN code is the operating password and relative with the SIM card.
The SIM card will be locked, if the PIN code is wrong for 3
consecutive times. At this time, you need the PUK code to unlock
the SIM card. The PUK code may be provided for you together with
the PIN code and the SIM card. If not, please contact your network
provider.
Phone lock: this function is to lock the phone and prevent other people
from using the mobile phone without permission (default password is
0000). After enable the phone lock, you must input the correct
password every time powering on the mobile phone, unless the mobile
phone cannot be used normally.
Auto keypad lock: after this function is activated, when the phone is in
standby status and without any operation, the keypad will be locked
automatically after the set time. Then the standby screen will show
keypad locked icon. At the left bottom corner of the screen, word of
Unlock will appear. If you need to unlock the mobile phone, you can
press PWR key, and then operate according to relevant screen
prompts.
Fixed dial: after the function is activated, the mobile phone is only
allowed to be used to dial the telephone numbers existing in the list. To
turn on the function, you need to input your PIN2 code. Please consult