It is very important that you remember your screen unlock pattern, PIN or password. If you forget this information, it may not be possible to restore important data such as contacts and messages. Refer to Sony customer support for more information.

To set a screen lock

1From your Home screen, tap > Settings > Security > Screen lock.

2Select an option.

To set up the Face Unlock feature

1From your Home screen, tap > Settings > Security > Screen lock.

2Tap Face Unlock, then follow the instructions in your device to capture your face.

3After your face is successfully captured, tap Continue.

4Select a backup lock method and follow the instructions in the device to complete the setup.

The Face Unlock feature is less secure than a screen lock pattern, PIN, or password. Someone who looks similar to you could unlock your device.

For best results, capture your face in an indoor area that is well lit but not too bright, and hold the device at eye level.

To unlock the screen using the Face Unlock feature

1Activate the screen.

2Look at your device from the same angle you used to capture your Face Unlock photo.

If the Face Unlock feature fails to recognise your face, you need to draw the backup pattern or enter the PIN to unlock the screen.

To disable the Face Unlock protection

1From your Home screen, tap > Settings > Security > Screen lock.

2Draw your backup screen unlock pattern or enter your PIN.

3Tap Swipe.

To create a screen unlock pattern

1From the Home screen, tap .

2Find and tap Settings > Security > Screen lock > Pattern.

3Follow 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

1Activate the screen.

2Draw your screen unlock pattern.

If 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

1From your Home screen, tap .

2Find and tap Settings > Security > Screen lock.

3Draw your screen unlock pattern.

4Tap Pattern.

5Follow the instructions in your device.

To disable the screen unlock pattern

1From your Home screen, tap > Settings > Security > Screen lock.

2Draw the screen unlock pattern.

3Tap Swipe.

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Sony LT28i To set a screen lock, To set up the Face Unlock feature, To unlock the screen using the Face Unlock feature
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LT28i, LT28h specifications

The Sony LT28h and LT28i, also known as the Sony Xperia V, were standout models released in 2012. These smartphones were part of Sony's Xperia lineup, which emphasized multimedia capabilities, robust performance, and sleek designs.

One of the main features of the Sony LT28h and LT28i is their impressive display. Both models sport a 4.3-inch Reality Display with Mobile BRAVIA Engine technology, which delivers vibrant colors and sharp images, making it a delight for media consumption. The screen resolution of 1280 x 720 pixels ensures that images and videos are rendered in high definition, providing an immersive viewing experience.

Under the hood, the LT28h and LT28i are powered by a Qualcomm Snapdragon S4 dual-core processor clocked at 1.5 GHz. This chip, along with 1 GB of RAM, offers seamless multitasking and smooth performance for everyday tasks and applications. Users can run multiple applications without significant slowdown, making these models well-suited for both work and entertainment.

Camera capabilities are another significant draw for the Xperia V models. The rear camera boasts an 13 MP sensor with LED flash and features like autofocus, geo-tagging, and image stabilization. This allows users to capture stunning photos, even in low-light conditions. Additionally, the front-facing camera with a 1.3 MP sensor is perfect for video calls and selfies.

In terms of connectivity, the LT28h and LT28i offer a comprehensive range of options, including 4G LTE support, ensuring fast mobile data speeds. They also feature Wi-Fi, GPS, Bluetooth 4.0, and NFC, which enhances their usability in various scenarios, from file sharing to navigation.

Battery life is a critical aspect of any smartphone, and these models do not disappoint with a 1750 mAh battery, which, depending on usage, can provide sufficient power to get through a full day. Sony included its STAMINA mode, an intelligent battery management feature designed to extend battery life significantly by limiting background data usage.

In addition to hardware features, the LT28h and LT28i run on Android, which provides a smooth and customizable user experience. The user interface is user-friendly and supports a plethora of apps available on the Google Play Store, enhancing the smartphones' functionality.

Overall, the Sony LT28h and LT28i offer an impressive combination of features, making them strong contenders in the smartphone market during their release period. Their balance of performance, multimedia capabilities, and design continues to be remembered fondly by users and technology enthusiasts alike.
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