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The PIN protects your SIM from unauthorised use. When use of PIN is turned on, you need to key in your PIN every time the USB modem application starts. Remember, you need to turn on use of PIN.
1. Connect your USB modem and your computer
2. Find "Advanced options"
3. Change PIN
Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from Vodafone.
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