Verykool R25 - Manual (Page 17)

plug the earphone firstly).
12 Settings
Enter Settings, you can modify parameters of the time and date,
personalized settings and phone settings.
1.12 User profiles
User Profiles contains predefined settings for ring tone and volume.
You can change the existing profiles according to your own
preferences. In standby screen, long pressing the # key will quickly
activate Silent mode. The headset profile is automatically activated
when the earphone is inserted, and all other profiles are
automatically disabled.
1.13 Network settings
You can set the SIM selection mode, dual SIM settings and flight
mode. In SIM1/SIM2 network settings, you can select appropriate
network.
Note:
Please do not register networks inconsistent with the SIM
card, so as to prevent unavailability of normal use. For details,
please consult your service provider.
1.14 Security settings
SIM1/SIM2 security: this function can prevent others from using
your SIM card without your permission. You can change the
password of SIM1/SIM2 PIN and SIM1/SIM2 PIN2 through the
system prompts.
Phone security: this function is to lock and prevent other people
from using the phone without permission (default password is
0000). You can change the phone lock password through the
system prompts.
Auto keypad lock: activated this function, when the phone without
any operation in standby screen, the keypad will be locked
automatically after the set time. If you need to unlock the keypad,
you can press any key except end key, and then operate according
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