Audiovox Thero User Manual page 75

Chapter 3: Phone Functions
Security
Use Security tab to lock the modem or change the password.
When the modem is locked, most menu functions (Options, Messaging, Call Log etc.) cannot be
used. (The Unlock Modem menu can be selected.)
Also, no calls other than emergency calls can be placed, and when a call is received, the caller's
phone number is displayed "
The default of the lock code is the last four digits of the device's phone number, if the phone is
activated.
".
***
Select never or on power up.
Tap to change the lock code.
To change the lock code, first enter the
old lock code, then enter the new one.
Tap to immediately lock the modem.
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