Verykool i720 - Manual (Page 18)

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2. Enter a new PIN of your choice and press the OK key.
3. When the Confirm New PIN message is displayed, key-in the same code
again and press the OK key.
If you enter an incorrect PUK ten times in succession, the SIM card becomes
invalid. Please contact your service provider for a new card.
„
Pin Password
The 4 ~ 8 digits of password is required when you use the Call barring function.
You can obtain the password from your service provider when you subscribe to this
function.
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