Sony Xperia E Dual C1605 Black [20/22] White paper xperia e dual

White paper | Xperia™ E dual

18 December 2012

3. Phone Memory (also known as “Data partition” or “/data”) is memory type that is used as working

memory. It can be compared to the C: drive on a PC or to the startup disk on a Mac. All applications

Google Play™ or other sources are installed (at least initially) to this type of memory.

Some can later be moved to another memory.

In this type of memory, as with System Memory, all applications have an allocated area which no other

applications can access and to where the applications can and usually do save their data (such as

phonebook, calendar, notes, and email applications).

Phone Memory will tend to fill up as a result of normal use, the use of applications saving their data,

and you downloading and installing new applications. Therefore, the larger this memory is from the

start, the more applications you can download and use.

If the Phone Memory starts to get full, the phone slows down, and in some cases it might no longer be

possible to install more apps. You should always ensure that you have at least 50 MB of free Phone

Memory. If not, you should consider removing some apps that you seldom use, or move some

applications from the Phone Memory.

You can see how much Phone Memory is free under Settings > Storage > Phone memory. You can

also view Phone Memory availability and usage information under Settings > App.

4. Internal Storage/SD card (also known as “/sdcard”) is the memory used for:

• Content such as photos, movies and music which is added, for example, as a result of the user

taking photos with the camera, downloading media files, and performing file transfers.

• Certain applications to store data in cases where larger amounts of content are involved. For

example, applications for games and maps need to store larger files which would not fit in the

Phone Memory.

• Applications that can be moved after installation from the Phone Memory. Note that not all

applications can be moved, and in such cases the option to move the particular application will not

be available. Typically, apps running as services, apps with widgets, or apps for live wallpapers

cannot be moved. Also note that when apps are moved to the Internal Storage or to the SD card

memory, a small part of the app will still remain in the Phone Memory.

This type of memory differs most between different Android phone models. In some models, a large

amount of internal memory is built into the phone and is referred to in the user interface as “SD card”

memory. In other cases, the phone features a memory card slot and a removable memory card that is

bundled with the phone.

You can see how much Internal Storage is available under Settings > Storage > Internal storage.

In the Xperia™ E dual, the three areas of persistent memory (System Memory, Phone Memory, and

Internal Storage), together with some small memory allocations for system operations, share 4 GB of

built-in eMMC memory.

Note that in some products you may find both a large internal memory and a memory card reader slot.

However, on the current Android platform, the card reader slot does not work in the same manner in a

phone which also features built-in storage as it does in a phone with only a memory card slot and no

internal storage. Generally, while you can access content (such as videos, photos and music) on this

optional memory card, you cannot in general save anything to the card. Some applications, for

example, a backup service application, may still be allowed to do so. In effect, this means that some

products feature a fourth type of persistent memory, called “External Card”: