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    SIM card protection

    You can lock and unlock each SIM card that you use in your device with a PIN. When a SIM card is locked, the subscription linked to the card is protected against misuse, meaning that you have to enter a PIN every time you start your device.

    If you enter the PIN incorrectly too many times, your SIM card will get blocked. You then need to enter your PUK (Personal Unblocking Key) and a new PIN. Your PIN and PUK are supplied by your network operator.

    To set up a SIM card lock

    1. Find and tap Settings > Lock screen & security > Advanced > SIM card lock.
    2. Dual SIM users, select a SIM card.
    3. Tap the Lock SIM card switch to enable.
    4. Enter the SIM card PIN and tap OK. The SIM card lock is now active and you will be prompted to enter your PIN every time you restart your device.

    To change the SIM card PIN

    1. Find and tap Settings > Lock screen & security > Advanced > SIM card lock.
    2. Dual SIM users, select a SIM card.
    3. Tap Change SIM PIN and follow the on-screen instructions.
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number