Casio G'zOne Ravine - Manual (Page 139)

138
SETTINGS & TOOLS
NOTES
When Keyguard Timer is set to Lock on Flip Close, the side keys
are locked as soon as the flip is closed. When unlocked with the
flip closed, the handset will be locked again if you do not operate
it within seven seconds.
When you open the flip, the side keys will unlock.
Even when locked, the side keys are still operational in the
following cases:
During alarms and schedule alerts.
When the handset receives an incoming call.
During a call.
When the handset receives a PTT incoming call.
During a PTT call.
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Unlock Options
To select how to unlock the side keys when the keyguard has been
activated:
1. From idle mode, press the Center Select Key [MENU], select
Settings & Tools, then press the Center Select Key [OK].
2. Press  Keyguard Settings,  Unlock Options.
3. Select one of the following settings, then press the Center Select
Key [SET].
Press Once: Temporarily release the lock by pressing the Bottom
Side Key  once with the flip closed.
Press Twice: Temporarily release the lock by pressing the Bottom
Side Key  then the Volume Key  down with the flip
closed.