# Protect your SIM card with a PIN

You can protect your SIM card from unauthorized use by assigning a PIN (personal identification number). The default SIM card PIN is provided by your wireless service provider.

To enable the SIM card PIN

1. Tap Start > Settings > Personal tab > Phone > GSM/UMTS Services tab.
2. Select PIN/PIN2 on the list of available services, then tap Get Settings.
3. Select the Require PIN when phone is used check box.
4. Enter the PIN number and then tap OK. To change the PIN at any time, tap Change PIN.
   Tip: Emergency calls can be placed at any time, without requiring a PIN.

To change the SIM card PIN

1. Tap Start > Settings > Personal tab > Phone > GSM/UMTS Services tab.
2. Select PIN/PIN2 on the list of available services, then tap Get Settings.
3. Tap Change PIN.
4. Enter the SIM PIN, then tap OK.
5. Enter the old SIM PIN, then enter the new SIM PIN in the New PIN and Confirm new PIN fields.
6. Tap OK.