Zte MF335 User Manual page 28

2. Security Settings
• PIN Enable, Change PIN – Enable PIN protection and change your
PIN Number.
• Backup Phone Book, Call records, Internet connection records
and SMS – Store and restore back-ups on your PC.
Notes
The PIN number for the card is provided by service provider. If you
change or lock up your PIN number you will need to contact service
provider to get a PUK code.
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