Can’t unlock device via smartcard? (Blackberry Torch 9800)

FULL PHONE SPECS: Blackberry Torch 9800

CAUSES

-Smart card is incorrectly inserted

- Wrong smart card is inserted

- Incorrect smart card password input.

- Expired authentication certificate

SOLUTION

-Ensure smartcard is correctly inserted.

- Ensure you are using the correct smart card

- Ensure you have typed in the correct password that you received with your smartcard

- Ensure that the authentification certificate is valid.