To control the data usage of individual applications

1 From your Home screen, tap .

2Find and tap Settings > Data usage.

3Select a SIM card.

4Find and tap the desired application.

5Make the necessary adjustments to change the data usage limit, restrict background data, or restrict all data traffic for the application.

6To access more specific settings for the application, tap View app settings and make the desired changes.

Specific settings for an application may not always be accessible.

The performance of individual applications may be affected if you change the related data usage settings.

Selecting networks for data traffic

You can use data traffic on both SIM cards in the phone, or select to only use data traffic on one of the SIM cards. You can also set the phone to switch between the SIM cards automatically, for example at certain hours.

You can configure the data network from the setup guide the first time you start your dual-SIM phone.

To select your preferred data network

1 From the Home screen, tap .

2Find and tap Settings > Dual SIM card > SIM card for data traffic.

3Select a SIM card.

For faster data transmission speeds, select a SIM card that supports 3G.

To enable or disable automatic switching of data traffic between SIM cards

1 From the Home screen, tap .

2Find and tap Settings > Dual SIM card.

3Under Auto switch, mark or unmark the checkbox beside Data traffic.

To set a data traffic period for your dual-SIM phone

1 From the Home screen, tap .

2Find and tap Settings > Dual SIM card.

3Under Auto switch, tap Data traffic.

4Set the data traffic period for different SIM cards as required.

You can only set a data traffic period when both SIM cards are enabled in your phone.

Mobile network settings

Your phone automatically switches between mobile networks depending on what mobile networks are available in different areas. You can also manually set your phone to access a particular mobile network type, for example, WCDMA or GSM.

To select a network type

1 From your Home screen, tap .

2Find and tap Settings > More… > Mobile networks.

3Tap Select SIM card, then select a SIM card.

4Tap Network Mode.

5Select a network type.

Your phone supports the concurrent use of one WCDMA network and one GSM network, or two GSM networks.

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Sony 12640775, ST21a2, ST21i2, 1264-0772 manual Selecting networks for data traffic, Mobile network settings
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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.
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