ZTE BLADE - Manual (Page 93)

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3. Tap Change SIM/RUIM PIN.
4. Enter the old PIN and tap OK.
5. Enter your new PIN and tap OK.
6. Enter the new PIN again and tap OK.
Setting up Credential Storage
This lets you select applications to access secure certificates
and other credentials.
Enabling Secure Credentials
1. Tap Home Key > > Settings > Location & security.
2. Tap Set password and create a password for the
credential storage.
3. Tick the Use secure credentials box.
TIPS: You can also install encrypted certificates from your
microSD card by tapping Install from SD card.
Deleting Secure Credentials
1. Tap > Settings > Location & security.
2. Tap Clear storage to clear credentials.
Managing Your Memory Card
Checking Memory Card Space
Tap Home Key > > Settings > SD card & phone
storage.