Locking and protecting your phone

IMEI number

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

To view your IMEI number

1

2

1Turn off your phone, then remove the battery cover and battery.

2Look for the 15 to 17-digit number on the label. The first 15 digits represent the IMEI number.

SIM card protection

The SIM card lock only protects your subscription. Your phone will still work with two new SIM cards. If one of the SIM card lock is on, you have to enter a PIN (Personal Identity Number). If you enter your PIN incorrectly more times than the maximum number of attempts allowed, your SIM card will become blocked. You need to enter your PUK (Personal Unblocking Key) and then a new PIN. Your PIN, PIN2, and PUK are supplied by your service provider.

To enable the SIM card PIN lock

1From the Home screen, tap . .

2Find and tap Settings > Security > Set up SIM card lock.

3Select SIM1 or SIM2.

4Tap Lock SIM card.

5Enter the SIM card PIN and tap OK.

To change the SIM card PIN

1From the Home screen, tap . .

2Find and tap Settings > Security > Set up SIM card lock.

3Select SIM1 or SIM2.

4Tap Change SIM PIN.

5Enter the old SIM card PIN and tap OK.

6Enter the new SIM card PIN and tap OK.

7Retype the new SIM card PIN and tap OK.

To change the SIM card PIN2

1 From the Home screen, tap .

2Find and tap Settings > Call settings

3Tap Select SIM card, then tap SIM1 or SIM2.

4Tap Fixed dialing numbers > Change PIN2.

5Enter the old SIM card PIN2 and tap OK.

6Enter the new SIM card PIN2 and tap OK.

7Confirm the new PIN2 and tap OK.

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Sony ST21a2, ST21i2, 12640775, 1264-0772 manual Locking and protecting your phone, Imei number, SIM card protection

ST21i2, 1264-0772, ST21a2, 12640775 specifications

The Sony ST21a2, also known as the Sony Xperia Tipo, is a compact and user-friendly smartphone designed to cater to the needs of users seeking an accessible Android experience. With its sleek design and modest specifications, the Xperia Tipo emphasizes simplicity without compromising essential features.

One of the defining characteristics of the Xperia Tipo is its lightweight and ergonomic body, making it comfortable to hold and use for extended periods. The device boasts a 3.2-inch display with a resolution of 320 x 480 pixels, providing decent visual quality for browsing and media playback. The screen is designed to enhance user interaction, making navigation through the Android interface smooth and straightforward.

The Xperia Tipo runs on Android 4.0 Ice Cream Sandwich, which offers a range of functionalities that make everyday tasks more manageable. Users can access the Google Play Store, allowing them to download a vast array of applications to further customize their experience. The device is powered by a Qualcomm Snapdragon S1 processor, which, while not the latest in technology, provides sufficient performance for routine tasks such as calling, texting, and using social media.

Another notable feature of the Xperia Tipo is its 3.2-megapixel rear camera, which allows users to take basic photos and videos. The camera includes features such as geo-tagging and a simple interface, making it suitable for casual photography. Unfortunately, it lacks a front-facing camera, limiting its capability for video calls.

Connectivity options for the Xperia Tipo include Wi-Fi, Bluetooth, and 3G support, ensuring that users can stay connected whether at home or on the go. The device also includes a 1500mAh battery, providing adequate longevity for daily use without the need for frequent recharging.

In terms of storage, the Xperia Tipo comes with 2.5GB of internal memory, expandable via microSD, allowing users to store additional apps, photos, and media files easily. The phone’s compact size, alongside its modest features, makes it an excellent choice for first-time smartphone users or those looking for a reliable secondary device.

In summary, the Sony ST21a2, or Xperia Tipo, is characterized by its compact design, user-friendly interface, and essential features. While it may not compete with more advanced smartphones in terms of specifications, it provides a solid foundation for users seeking simplicity and functionality in their mobile experience.