Verykool i285 - Manual (Page 32)

your network service provider for specific situations.
Note:
When the Fixed dial function is active, the function of SIM card
will be restricted, such as call dialing, sending SMS, sending
MMS and so on.
Barred dial: this function needs to be supported by the SIM card.
Consult your network service provider for specific situations.
Change password: you can change the password of the SIM PIN
through the system prompts.
1.1.1.6
Phone lock
This function is to lock the phone and prevent other people from
using the mobile phone without your permission (default password
is 0000). After locking the phone, you must input the correct
password every time you power on the mobile phone, otherwise the
mobile phone cannot be used normally.
1.1.1.7
Auto keypad lock
After this function is activated, when the phone is in standby status,
the keypad will be locked automatically after the designated amount
of time. The standby screen will show two small lock icons, and by
sliding the lock icon above to the lock icon below, the phone will
unlock.
1.1.1.8
Change password
You can change the phone lock password through the system
prompts.
1.1.1.9
Certificate manager
You can view the certificates in Certificate manager.
1.1.1.10
Mobile tracker
When using this function, the password input screen displays. After
you input the correct password (default password is 0000), and
enter the phone guard menu list, you can set the status and
receiving number of the phone guard.
The function is activated and the receiving number is set, when
another SIM card is inserted into your phone. The call receiver will
get this message.