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Locking and protecting your device

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IMEI number

Every device has a unique IMEI (International Mobile Equipment Identity) number. You should keep a copy of this number. If your device is stolen, your network provider can use your IMEI number to stop the device from accessing the network in your country.

To view your IMEI number

IMEI number on Sony Xperia™ M
  • Remove the cover to view your IMEI number.
  • Open the phone dialer on your device and enter *#06#*.

To view your IMEI number in the device

  1. From your Home screen, tap Icn sony home apptray normal .
  2. Find and tap Settings > About phone > Status.
  3. Scroll to IMEI to view the IMEI number.

SIM card protection

You can lock and unlock each SIM card that you use in your device with a PIN (Personal Identity Number). When a SIM card is locked, the subscription linked to the card is protected.

If you enter the PIN incorrectly more times than the maximum number of attempts allowed, your SIM card will become 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 lock a SIM card

  1. From the Home screen, tap Icn sony home apptray normal .
  2. Find and tap Settings > Security > Set up SIM/RUIM card lock.
  3. Select a SIM card.
  4. Tap Lock SIM card.
  5. Enter the SIM card PIN and tap OK.

To unlock a locked SIM card

  1. When Enter PUK and new PIN code. appears, enter the PUK code.
  2. Enter a new PIN code and tap OK.
  3. Re-enter the new PIN code and tap OK.
NoteIf you enter an incorrect PUK code too many times, the SIM card becomes locked. If this happens, contact your service provider to get a new SIM card.

To change the SIM card PIN

  1. From the Home screen, tap Icn sony home apptray normal .
  2. Find and tap Settings > Security > Set up SIM/RUIM card lock.
  3. Select a SIM card.
  4. Tap Change SIM PIN.
  5. Enter the old SIM card PIN and tap OK.
  6. Enter the new SIM card PIN and tap OK.
  7. Re-type the new SIM card PIN and tap OK.

To change the SIM card PIN2

  1. From the Home screen, tap Icn sony home apptray normal.
  2. Find and tap Settings > Call settings
  3. Tap Select SIM card, then select a SIM card.
  4. Tap Fixed dialling numbers > Change PIN2.
  5. Enter the old SIM card PIN2 and tap OK.
  6. Enter the new SIM card PIN2 and tap OK.
  7. Confirm the new PIN2 and tap OK.

Setting a screen lock

There are several ways to lock your device screen. For example, you can use the Face Unlock feature, which uses a picture of your face to unlock the screen. You can also set a screen unlock pattern, a number-based PIN lock, or a text-based password.

To set a screen lock

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock.
  2. Select an option.

To create a screen unlock pattern

  1. From the Home screen, tap Icn sony home apptray normal.
  2. Find and tap Settings > Security > Screen lock > Pattern.
  3. Follow the instructions in your device. You are asked to select a security question that will be used to unlock the device if you forget your screen unlock pattern.

To unlock the screen using a screen unlock pattern

  1. Activate the screen.
  2. Draw your screen unlock pattern.
NoteIf the unlock pattern you draw on the screen is rejected five times in a row, you can select to either wait 30 seconds and then try again, or to answer the security question you have selected.

To change the screen unlock pattern

  1. From your Home screen, tap Icn sony home apptray normal.
  2. Find and tap Settings > Security > Screen lock.
  3. Draw your screen unlock pattern.
  4. Tap Pattern.
  5. Follow the instructions in your device.

To disable the screen unlock pattern

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock.
  2. Draw the screen unlock pattern.
  3. Tap Swipe.

To create a screen unlock PIN

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock > PIN.
  2. Enter a numeric PIN.
  3. If necessary, tap Key text input back to minimise the keyboard.
  4. Tap Continue.
  5. Re-enter and confirm your PIN.
  6. If necessary, tap Key text input back to minimise the keyboard.
  7. Tap OK.

To disable the screen unlock PIN

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock.
  2. Enter your PIN, then tap Next.
  3. Tap Swipe.

To create a screen lock password

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock > Password.
  2. Enter a password.
  3. If necessary, tap Key text input back to minimise the keyboard.
  4. Tap Continue.
  5. Re-enter and confirm your password.
  6. If necessary, tap Key text input back to minimise the keyboard.
  7. Tap OK.

To disable the screen unlock password

  1. From your Home screen, tap Icn sony home apptray normal > Settings > Security > Screen lock.
  2. Enter your password and tap Next.
  3. Tap Swipe.
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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