White paper Xperia™ M2 dual

Memory in Android™ devices

To use Android devices efficiently, users should be aware of the different types of device memory. This knowledge is important in order to understand, for example, where music, photos and videos are saved; how many apps can be downloaded from Google Play™; and how photos can be copied to a PC.

The below information is also of interest to developers who want to optimise their programs to make the best possible use of the resources in the device.

Generally, all Android devices share the same basic memory setup. What differs is how much memory is available to you via the different types of memory, and whether your device uses an external SD card or an internal memory chip. Any information specific to the particular device model described in this White Paper is noted as such.

Types of memory

The types of memory described and numbered below are consistent with the terminology used in Sony mobile device menus and in other content relating to 2014 Xperia™ devices:

1.Dynamic Memory (also known as RAM) is used by applications that run when the device is turned on. The amount of Dynamic Memory influences how many applications and operating system services can run at the same time. The Android operating system automatically closes applications and services that are not being used.

However, such automatic functionality has limits. For example, if a lower amount of free RAM is available to applications after a new release of the operating system (due to increased capabilities in the system), device speed will eventually be impacted. This is the main reason that a device cannot be indefinitely upgraded to newer releases of Android™.

If you experience problems with RAM, for example, if the device runs slower than usual or if the Home application restarts frequently when you leave an application, you should minimise the use of apps that run all the time. Such apps could include, for example, applications that frequently download social networking service updates. You could also consider using a static wallpaper instead of a live wallpaper.

To see which apps and services are currently active, go to Settings > Apps > Running. You should have at least 50 MB, and ideally 100 MB or more, of free RAM to avoid slowdowns and application restarts.

You should also be aware that if you update the device to a later Android release, the load on the built- in Dynamic Memory will increase due to the addition of more features, as mentioned above. As a result, the device may run slower after an update.

The Xperia™ M2 dual has about 1 GB of RAM available to the Android OS and applications, of which about 200 MB is already used out of the box.

2.System Memory (also known as “System partition” or “/system”) is used for the Android OS and for most applications that are pre-loaded from the factory. This type of memory is normally locked, and can only be changed through a firmware upgrade. There is usually some free space available in this section of memory. However, since it is locked, you cannot save apps, photos or any other content to this memory. System Memory is reserved for future firmware upgrades, which almost always need more memory than the original firmware. You cannot see or influence the use of this memory.

3.Internal Storage is memory used as” working” memory. It can be compared to the C: drive on a PC or to the startup disk on a Mac.

13

May 2014

Page 15 Page 17
Page 16
Image 16
Sony D2302 manual Memory in Android devices, Types of memory
Page 15 Page 17

D2302 specifications

The Sony D2302, commonly known as the Xperia M2, stands out as a robust entry in the mid-range smartphone market. Launched in 2014, it was designed to deliver a balanced combination of performance, features, and style at an affordable price point.

One of the defining characteristics of the Sony D2302 is its sleek design. The smartphone features a minimalist aesthetic with a glass front and a plastic back that is both simple yet elegant. The compact size makes it comfortable to hold and operate with one hand, appealing to those who prefer practical yet stylish devices.

The display is another highlight of the D2302. It boasts a 4.8-inch qHD TFT LCD screen with a resolution of 540 x 960 pixels. While this may not compete with high-end models, the display offers decent brightness and color reproduction, making it suitable for everyday tasks such as browsing and viewing multimedia content.

Under the hood, the Xperia M2 is powered by a Qualcomm Snapdragon 400 processor, which is complemented by 1GB of RAM. This setup ensures that the device can run most applications smoothly, providing a satisfactory experience for users engaging in social media, web browsing, and casual gaming. Additionally, the 8GB internal storage can be expanded via a microSD card, accommodating those in need of extra space for their files and apps.

Photography enthusiasts will appreciate the 8MP rear camera, which brings several advanced features such as HDR and the ability to shoot 1080p video. The camera is supported by an LED flash, enabling users to capture memorable moments in various lighting conditions. The 0.3MP front-facing camera may not be as impressive, but it holds its own for video calls and selfies.

On the software side, the Xperia M2 runs on Android 4.3 Jelly Bean, with the promise of updates for newer iterations, ensuring a user-friendly experience. The device incorporates various Sony software enhancements that enhance the multimedia experience, including Walkman, Album, and Movies applications.

Battery life is crucial for any smartphone, and the D2302 is equipped with a 2300mAh battery that provides adequate power for a full day’s usage on moderate tasks. Coupled with Battery STAMINA mode, it helps prolong battery life by optimizing background apps and reducing power consumption.

In conclusion, the Sony D2302 Xperia M2 offers a compelling package for budget-conscious consumers who desire a smartphone that doesn't compromise on essential features, performance, and style. Its well-rounded capabilities continue to resonate with users looking for reliability and functionality in a competitive mobile market.
Top Page Image Contents