White paper
February 2014
Xperia™ Z2 Tablet
SGP521/SGP541/SGP551
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White paper | Xperia™ Z2 Tablet
Table of contents
Device-to-device communications (local) .............................................................9
Bluetooth® wireless technology.......................................................................10
Wi-Fi®...............................................................................................................11
Positioning – location based services .................................................................14
Provisioning (OMA CP) ........................................................................................14
Web browser .......................................................................................................17
Memory in Android™ devices .............................................................................18
Trademarks and acknowledgements ..................................................................22
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Product overview
Highlights
• 10.1-inch Full HD display with the latest BRAVIA® TV technology and X-Reality™ for mobile picture
engine
• S-Force Front Surround audio technology and Digital noise cancelling
• The slimmest (6.4mm) and lightest (under 450g) waterproof tablet on the market*
• The world’s most powerful tablet – LTE and Snapdragon quad-core 2.3 GHz processor**
• Powerful 6000 mAh battery with STAMINA mode
The sharpest images with the most vivid colours
Whether you are in bright daylight or in low light conditions, with the Xperia™ Z2 Tablet, you still can
watch entertainment in full, vivid colour. The Xperia™ Z2 Tablet’s 10.1-inch Full HD display is embedded
with the latest Sony BRAVIA TV technology expertise. At its core, TRILUMINOS™ Display for mobile
creates a wider palette of rich, natural tones while brand new Live Colour LED technology provides the
world’s most vivid and deepest colours on a tablet without the risk of oversaturation. Finally, unique to
Sony, the X-Reality™ for mobile picture engine analyses each image to optimize colour, sharpness and
contrast while super resolution reproduces lacking pixels. So you always get the sharpest images and
videos, even from low quality content such as still pictures and web videos.
The clearest sound quality
When holding a tablet your hand can sometimes get in the way of the speakers. But with Sony’s new S-
Force Front Surround audio technology coming at you via specially positioned speakers at the front of the
Xperia Z2, you can enjoy dynamic sound. And if you are on the move and want to watch your favourite
film, you no longer need to worry about the background noise from busy streets, noisy trains or even on
flights. The Xperia™ Z2 Tablet supports digital noise cancelling technology which reduces ambient noise
by up to 98%. Just make sure you use your Digital Noise Cancellation Headset.
The world’s slimmest and lightest tablet
The Xperia™ Z2 Tablet is created with a sleek design using premium material, which makes it the Xperia™
Z2 Tablet slimmest (only 6.4mm) and lightest (under 450g) waterproof tablet on the market. Specifically,
the Wi-Fi-only model weighs 426g while the 4G LTE modem model weighs 439g. Every single detail has
been carefully crafted so you can enjoy a tablet that is not only beautiful to look at, but is also extremely
portable and comfortable to hold with just one hand.
The durable waterproof tablet
The Xperia™ Z2 Tablet is designed with a display that is scratch resistant and a body that is entirely
waterproof so it can handle whatever life throws at it. You can even watch a movie in the bath while you
relax at the end of the day, or record a video in the pool while on holiday. The Xperia™ Z2 Tablet is built to
follow you wherever you go.
The world’s most powerful tablet
The Xperia™ Z2 Tablet combines the fastest processor in a tablet with Sony’s latest battery saving
technology, for fast and long lasting performance. We developed the Snapdragon 801 processor with
speeds of up to 2.3 GHz so that just the right processing components are used at the right power levels
for any given task. So, share your photos and files faster and stream your audio and video more smoothly
with the industry’s only third generation 4G LTE modem, delivering twice as fast 4G user speeds. Plus, a
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generous 3GB of RAM ensures plenty of memory capacity. And if that wasn't enough, you can enjoy
sharp, realistic mobile 3D gaming with the enhanced graphics capabilities of the newest Adreno 330 GPU,
which delivers a 20% performance improvement over the previous generation.
A longer-lasting battery
A 6000mAh ion battery and STAMINA Mode features are introduced in the Xperia™ Z2 Tablet, providing
up to 10 hours of uninterrupted multimedia usage. Extended standby time maximises your battery lifetime
by preventing unwanted applications and data communication from running in the background when the
display is turned off. So you won’t miss any important calls. Extended usage runtime can dynamically tune
the hardware parameters to reduce performance in favour of longer usage time, so you gain 15 percent
power saving even when you’re extra active. With STAMINA mode you can also benefit from extended
music playback, allowing you to listen to music for more than 100 hours without having to recharge your
battery. And that is something!
*Outside of Japan. The Xperia™ Z2 Tablet is a waterproof (in compliance with IP55/58††) tablet.
Specifications verified by Strategy Analytics’ SpecTRAX service as of 21st February 2014, for more
In compliance with IP55 and IP58, Xperia™ Xperia™ Z2 Tablet is protected against the ingress of dust
and is waterproof. Provided that all ports and covers are firmly closed, the phone is (i) protected against
low pressure jets of water from all practicable directions in compliance with IP 55; and/or (ii) can be kept
under 1.50 metres of fresh water for up to 30 minutes in compliance with IP58.
**The Xperia™ Z2 Tablet features Qualcomm's Snapdragon 801, 2.3GHz quad-core processor with
Adreno 330 GPU and 3GB RAM. Specifications verified by Strategy Analytics’ SpecTRAX service as of
testresults/
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Facts – dimensions, weight, performance and
networks
Operating system
Processor
GPU
Google™ Android™ 4.4 (KitKat)
Qualcomm Snapdragon 801 Quad-core with 2.3 GHz
Adreno 330
Size
172 x 266 x 6.4 mm
Weight
439 grams
Available colours
Black, White (SGP521)
Black (SGP541, SGP551)
SIM card
micro SIM
Main screen
Colours
16,777,216 colour TFT
Resolution
WUXGA 1920x1200 pixels
10.1 inches
Size (diagonal)
Scratch-resistant
Input mechanisms
Text input
Chemical tempered glass + Anti fingerprint coating
On-screen QWERTY keyboard
Capacitive
Touch screen
Touch gesture
Memory
Yes – multi-touch, up to 10 fingers supported
RAM
3 GB
Flash memory
Expansion slot
Camera
Up to 16 GB*
microSD™ card, up to 128 GB (SDXC supported)
Camera resolution
Digital zoom
Video recording
Front Camera
Sensors
8.1 MP
8x
Yes – HD 1080p
Yes – HD 1080p for video chat and 2.2 MP for camera capture
Accelerometer
Ambient light sensor
Magnetometer
Yes
Yes
Yes
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Gyroscope
Networks
SGP541
Yes
UMTS HSPA+ 850 (Band V), 900 (Band VIII), 1700 (Band IV),
1900 (Band II), 2100 (Band I) MHz
GSM GPRS/EDGE 850, 900, 1800, 1900 MHz
SGP521
SGP551
UMTS HSPA+ 850 (Band V), 900 (Band VIII), 1700 (Band IV),
1900 (Band II), 2100 (Band I) MHz
GSM GPRS/EDGE 850, 900, 1800, 1900 MHz
LTE Band I, Band II, Band III, Band IV, Band V, Band VII, Band
VIII, Band XIII, Band XVII, Band XX
UMTS HSPA+ 850 (Band V), 900 (Band VIII), 1700 (Band IV),
1900 (Band II), 2100 (Band I) MHz
GSM GPRS/EDGE 850, 900, 1800, 1900 MHz
LTE Band I, Band II, Band III, Band IV, Band V, Band VII, Band
VIII
Data transfer speeds
GSM GPRS
Up to 107 kbps
Up to 296 kbps
GSM EDGE
UMTS HSPA+ cat 6 (upload) Up to 5.8 Mbps
UMTS HSPA+ cat 24
(download)
Up to 42 Mbps
LTE cat 4***
Up to 50 Mbps (upload), up to 150 Mbps (download)
Up to 24 hours**
Talk time (GSM)
Standby time (GSM)
Talk time (UMTS)
Standby time (UMTS)
Standby time (LTE)
Music listening time
Video playback time
Battery (Embedded)
Up to 1240 hours**
Up to 33 hours**
Up to 1210 hours**
Up to 1220 hours**
Up to 200 hours**
Up to 13 hours**
6000 mAh minimum
* Memory comprises approximately 5 GB of firmware, plus 11 GB of “Internal storage” for music, pictures
and movies, and downloaded applications and their data. For more details about memory, see “Memory in
** Values are according to GSM Association Battery Life Measurement Technique as performed in con-
trolled laboratory conditions. Actual time may vary.
*** LTE is not supported by the SGP541 variant.
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NOTE: Battery performance may vary depending on network conditions and configurations, and device
usage.
NOTE: Performance metrics measured under laboratory conditions.
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Categorised feature list
Internet
Music
Camera
Bookmarks
Album art
8.1 megapixel camera
8x digital zoom
Google Chrome™*
Google Play™*
Google™ search*
Google Voice™ Search*
Google Maps™ for Mobile with
Street view*
Info-eye™*
Play Books
Play movies & TV
Play Games
Sony Select
Bluetooth® stereo (aptX®, A2DP)
ClearAudio+
Clear Bass™
Clear Phase™
Clear stereo
Dynamic normaliser
High definition audio
Hi-Res Audio
Low power audio playback***
Music tones (MP3/AAC)
Noise cancel
PlayNow™ service*
S-Force Front Surround
SensMe™
Auto focus
Burst mode
HDR for photos and movies
Face detection
Front-facing camera (2.2 MP
1080p)
Geotagging
HD video recording (1080p)
Image stabiliser
Object tracking
Picture Effect
Quick Launch
Xperia™ Home
Web browser (WebKit™)*
Scene recognition
Self-timer
Stereo speakers
TrackID™ music recognition*
“WALKMAN” application
xLOUD™ Experience
Send to web
Smile Shutter™
Sony Exmor RS® for mobile (8.1
MP - main camera)
Sony Exmor R® for mobile (2.2
MP - front camera)
Superior Auto
Sweep Panorama
Touch capture
Touch focus
White balance
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Design
Auto rotation
Communication
Call list
Messaging
Email
STAMINA mode
Direct touch
Face Unlock
Facebook™ application*
Google+*
Hangouts™*
Noise suppression
Polyphonic ringtones
Speakerphone
Slow talk
Talk equaliser
Twitter™ application*
Voice enhancement
Xperia™ Socialife*
Google Mail™*
Handwriting recognition
Predictive text input
Sound recorder
Gesture input
IPX5 and IPX8 (waterproof)**
IP5X (Dust protected)
On-screen QWERTY keyboard
Screenshot capturing
Throw
X-Reality™ for mobile
Touch screen
Triluminos™ Display for mobile
Voice input
Wallpaper
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Connectivity
3.5 mm audio jack Digital Noise-
Cancelling (DNC)
ANT+™ sport, fitness, health sup-
port
Organiser
Airplane mode
Alarm clock
Battery STAMINA mode
Calculator
Entertainment
Digital TV (1seg and full seg)****
Media browser
Motion gaming
PlayStation® Certified
Radio (FM radio with RDS*)
SensMe™ slideshow
Sony Entertainment Network*
TV launcher
aGPS*
Calendar
Contacts
Bluetooth® 4.0 wireless technol-
ogy
Bluetooth® Low Energy
DLNA Certified®
GLONASS
eCompass™
Notes
Setup guide
Stopwatch
Timer
Video streaming
YouTube™*
HDCP
MHL 3.0 support
Media Go™
Media Transfer Protocol support
Micro USB support
Microsoft® Exchange
ActiveSync®
Miracast
Native USB tethering
NFC
PC Companion
Remote control application
Screen mirroring
Smart Connect
Synchronisation via Facebook™
Synchronisation via Google™*
Synchronisation via SyncML™
TV SideView
USB charging
USB High speed 2.0 support
Wi-Fi®
Wi-Fi® Hotspot functionality
Xperia Link™
* This service is not available in all markets.
** In compliance with IP55 and IP58 standards, the Xperia™ Z2 Tablet is protected against the ingress of
dust and water. Provided that all ports and covers are firmly closed, the phone is (i) protected against low
pressure jets of water from all practicable directions in compliance with IP55; and/or (ii) can be kept under
1.50 metres of freshwater for up to 30 minutes in compliance with IP58. The phone is not designed to float
or work submerged underwater outside the IP55 or IP58 classification range, and such use may lead to
*** This feature is only available when you play music using the "WALKMAN" application.
**** This service is only supported by the SGP551 variant.
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Technologies in detail
NOTE: The information outlined below is general and levels of compliance to standards and specifications
may vary between products and markets. For more information, contact Sony Mobile Developer World or
your Sony contact person where applicable.
Device-to-device communications (local)
ANT+™ wireless technology
Connectable devices
ANT+™ devices require the download of a supporting
application
Frequency band
Data transfer rate
Encryption
2.4 GHz
Up to 60 Kbps
AES-128
Topologies
One to Many, Many to One, Peer to Peer, Star, Practical
Mesh
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Bluetooth® wireless technology
Bluetooth® Profiles supported
Advanced Audio Distribution Profile v1.2
Audio/Video Remote Control Profile v1.3
Handsfree Profile v1.6 (Wide band speech)
Headset Profile v1.2
Object Push Profile v1.1
Phonebook Access Profile v1.1
Message Access Profile v1.0
Health Device Profile v1.1
Generic Attribute Profile Client/Server over LE
Device ID Profile v1.3
Human Interface Device Profile v1.1
Personal Area Networking Profile v1.0
Serial Port Profile v1.1
HID over GATT 1.0
Core version and supported
core features
Version 4.0
Connectable devices
Products supporting at least one of the profiles above.
BT4.0 accessories generally require installation of a sup-
porting application.
More information:
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Wi-Fi®
Supported standards
IEEE 802.11a/b/g/n/ac and Wi-Fi®
Wi-Fi Direct™, Wi-Fi Protected Setup (STA and AP
modes), Wi-Fi CERTIFIED Miracast™, Wi-Fi CERTIFIED
ac™, Wi-Fi CERTIFIED Passpoint™
Connectable devices
Wi-Fi® access points
Wi-Fi Direct compatible devices
Frequency band
Data transfer rate
Security
2.4 GHz / 5 GHz
Up to 433 Mbit/s
WEP Open Authentication
WEP Shared Authentication
WPA Personal and WPA2 Personal
WPA Enterprise and WPA2 Enterprise
EAP-SIM
EAP-AKA
EAP-TLS
EAP-TTLS/MSCHAPv2
PEAPv0/EAP-MSCHAPv2
PEAPv1/EAP-GTC
Encryption
Power save
QoS
WEP 64 bit, WEP 128 bit, TKIP and CCMP (AES)
WMM-PS
WMM
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DLNA Certified® (Digital Living Network Alliance)
Supported Device Classes
M-DMS – Mobile Digital Media Server
Media Types: images, music and video
Summary: The digital media server exposes the media
files in your device to a Wi-Fi® network. The files can
then be accessed from other DLNA Certified® clients.
+PU+
Media Types: image, video and music
Summary: Play media in the tablet on another device,
such as a TV or computer using 2 box push technology.
+PU+ is integrated in the Album, Movies and WALKMAN
applications.
M-DMP – Mobile Digital Media Player
Media Types: image, video and music
Summary: Play content stored on another device, for
example, a server or a PC, directly on the tablet.
+DN+
Media Types: video and music
Summary: Download content stored on another device,
for example, a server or a PC, and play the downloaded
content directly on the tablet.
Supported Bearers
DRM Support
Wi-Fi®
Wi-Fi Direct
The DLNA Certified® implementation does not support
DRM-protected content.
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Messaging
MMS (Multimedia Messaging Service)
According to OMA Multimedia Messaging Service v1.0 + SMIL
Email
Bearer type (IP)
Character sets
GPRS, EGPRS, UMTS
BIG5 Traditional Chinese
GB18030
ISO-2022-JP Japanese
ISO-8859-1
ISO-8859-2 Eastern Europe
ISO-8859-5 Cyrillic
ISO-8859-7 Greek
ISO-8859-9 Turkish
ISO 8859-11
KOI8-R Cyrillic
Shift_JIS Japanese
USASCII
UTF-16
UTF-8
Windows® 874
Windows® 1251 Cyrillic
Windows® 1252
Windows® 1254 Turkish
Windows® 1258 Vietnamese
Protocols
POP3 and IMAP4
Push email
Microsoft® Exchange ActiveSync® (EAS)
IMAP4 Idle
Secure email
HTML mail
SSL/TLS, both port methods (POPS/IMAPS) and START-
TLS
Yes (read only)
More information:
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Positioning – location based services
Supported standards:
• OMA Secure User Plane Location (SUPL) v1.0 & v2.0
• 3GPP™ Control Plane location
• Qualcomm® GPSOneXtra™
Supported satellite systems:
• GPS
• GLONASS
NOTE: GPS and GLONASS are used together to calculate the position. Positioning is more robust and
accurate in most conditions, if both systems are active. The benefits of using GLONASS are automatically
available for all applications using the Satellite Positioning API (referred to "GPS Provider" in Android
terminology).
Provisioning (OMA CP)
OMA CP version 1.1
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Multimedia (audio, image and video)
Audio Playback
Decoder format
Supported in file format
AAC (AAC-LC, AAC+, eAAC+,
AAC-ELD)
3GPP (.3gp, 3gpp), MP4 (.mp4,
.m4a), ADTS (.aac)
AMR-NB, AMR-WB
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4a), AMR (.amr, .awb)
FLAC
MIDI
FLAC (.flac), Matroska (.mka)
SMF (.mid), XMF (.xmf), Mobile
XMF (.mxmf), OTA (.ota), RTTTL
(.rtttl), RTX (.rtx), iMelody (imy)
MP3
MP3 (.mp3)
PCM
WAV (.wav)
Vorbis
OGG (.ogg), Matroska (.mkv)
ASF (.wma)
WMA
Audio Recording
Image Playback
Encoder format
AAC (AAC-LC, AAC+, AAC-ELD)
Supported in file format
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4a)
AMR (AMR-NB, AMR-WB)
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4a), AMR (.amr)
Decoder format
BMP
Supported in file format
BMP (.bmp)
GIF
GIF (.gif)
JPEG
JPEG (.jpg, .jpeg)
PNG (.png)
PNG
WebP
WebP (.webp)
Windows bitmap
Encoder format
JPEG
BMP (.bmp)
Image Capture
Supported in file format
JPEG (.jpg)
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Video Playback
Decoder format
Supported in file format
MPEG-4
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4v), Matroska (.mkv), AVI
(.avi), Xvid (.xvid)
H.263
H.264
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4v)
3GPP (.3gp, .3gpp), MP4 (.mp4,
.m4v), Matroska (.mkv)
H.265*
MP4 (.mp4, .m4v)
VP8
WebM (.webm), Matroska (.mkv)
WebM (.webm)
VP9
Video Recording
Encoder format
MPEG-4
H.263
Supported in file format
3GPP (.3gp), MP4 (.mp4)
3GPP (.3gp), MP4 (.mp4)
3GPP (.3gp), MP4 (.mp4)
H.264
Audio/Video Streaming
DRM
Streaming transport
HLS
HTTP progressive streaming
MPEG-DASH
RTSP
DRM (Digital Rights Management) – OMA DRM v1.0
features the rights and copy
Marlin DRM
protection of downloaded content
Widevine Level 3
PlayReady DRM (available in
specific regions)
* H.265 is not available in all markets.
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Synchronisation (OMA DS, EAS, Google Sync™)
OMA Data Synchronisation protocol versions 1.1.2 and 1.2
OMA Data Formats: vCard 2.1, vCalendar 1.0
Microsoft® Exchange ActiveSync® protocol version 2.5
Microsoft® Exchange ActiveSync® protocol version 12
Microsoft® Exchange ActiveSync® protocol version 12.1
Microsoft® Exchange ActiveSync® protocol version 14
Microsoft® Exchange ActiveSync® protocol version 14.1
Google Sync™
Related information:
Web browser
Google Chrome™ for Android™ is pre-installed in markets/regions where no restrictions apply.
Related information:
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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™ Z2 Tablet has about 3 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.
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This type of memory is used to store all application downloaded from the Google Play™ Store (and
other sources) as well as their settings and data (such as emails, messages and calendar events, for
example). All applications have an allocated area which no other applications can access and where
the application data can be stored.
Some game applications also store content such as game music and game level information outside
their own designated area. In most cases, an application can choose to save its data in a location of its
own choosing (outside the protected application settings area). Generally, such content is not deleted
when an application is uninstalled; it must be removed manually by connecting the device to a
computer with a USB cable, or by using a file manager application.
Internal Storage is also used for all user content added, for example, as a result of the user taking
photos with the camera, downloading media files, and performing file transfers. Typical user content
includes:
• photos
• movies
• music
• downloaded documents (as email attachments, for example)
Internal Storage will tend to fill up as a result of normal usage. Examples of such usage are the saving
of data by applications; the downloading and installation of new applications; the downloading of free
or paid content; and the shooting of pictures and movies. Therefore, the larger this memory is from the
start, the more applications you can download and use, and the more pictures and movies you can
shoot.
If the Internal Storage starts to get full, the device 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 100 MB of free Internal
Storage. If not, you should consider removing some apps that you seldom use, or move content that
you do not frequently access to safe storage.
You can see approximately how much Internal Storage is free in Settings > Storage > DEVICE
MEMORY. You can also view more detail about how much memory is used by applications in
Settings > Apps. In the Xperia™ Z2 Tablet, about 11 GB of Internal Storage is available out of the
box.
Please note that in Sony Mobile 2014 products, “Internal Storage” is now the combination of what was
previously known as “Device Memory” or “Phone Memory” (for applications and their data – also
previously known as “/data”) and “Internal Storage” (for user’s content – also previously known as “/
sdcard”). The reason for this change is to make the use of available memory more flexible, and also to
enable the optional encryption of user’s content.
Memory card slot
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 device with a
large internal memory as it does in a device with ONLY a memory card slot.
Generally, since most applications expect only a single location for storage, such applications will not
generally allow you to SAVE anything to the memory card (i.e., they do not offer the option to choose a
storage location). However, some applications (for instance, the Sony Mobile “Camera” application) may
actually allow you to do so. Other applications, for example, backup applications such as the Sony Mobile
“Memory” application, will by definition be configured to copy content from the Internal Storage to the
external SD card.
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On the other hand, when it comes to reading from an external SD Card, you will be able to access content
(for example, videos, photos and music) on a memory card inserted in this slot without any special
consideration since the Android system searches all available memory for content. Therefore, such
products may be regarded as supporting a fourth type of memory, called “External Card” or “SD Card”.
4. SD Card (known as “/ext_card” from a programmer’s point of view, or by other names in other Android
products) is the name for the removable SD memory card in all 2014 Sony Mobile products. As
described above, this External Card memory is generally more limited in that any application can read
from it, but many applications cannot save to this card. Only a few applications, including backup
applications and file manger applications, have the capability to save to this card.
Backing up data to different memory types
Generally, you should not save photos, videos and other personal content solely on the internal memory
of a device. If something should happen with the hardware, or if the device is lost or stolen, the data
stored on the device’s internal memory is gone forever.
In a device where an SD card reader is the main memory, it is relatively easy to take the card out and copy
all content to a PC or Mac, or to an entertainment device with a memory card slot. In a product featuring
Internal Storage as the main memory, it is not possible to physically remove the memory. Instead, any
critical or high-value content must either be copied to an external SD card by a special backup
application, transferred to remote storage over a network (mobile or Wi-Fi), or to a computer via a USB
cable.
To facilitate the transfer of data via a cable, the Xperia™ Z2 Tablet supports the Microsoft standard, Media
Transfer Protocol (MTP), which makes it possible to easily transfer content back and forth between your
device and a Windows PC. For Apple Mac computers, a special application called Sony™ Bridge for Mac
is available with built-in support for MTP. This application can be downloaded from the Xperia™ Z2 Tablet
Support page.
Note that you do not need to back up or make a copy of applications that you have downloaded from the
Google Play™ Store. They can normally be downloaded again after you have set up your Google account
to work in a new device (or in a device where the memory has been completely erased).
Note 1:
As noted above, some Android devices, including Sony Mobile devices from 2012 and Sony Ericsson
devices from 2011 and earlier, do not use a single “Internal Storage” for both applications (and their data)
and user content. Instead, these devices use either an external SD card for user content, or a
corresponding area of internal memory to reproduce the functionality of an SD card. In such devices, there
is a fixed limit between the application area (“/data”) and the user content area (“/sdcard”), with the result
that user content can build up and reach this limit. The consequence of such a limit being reached, for
example, for the camera application, would be that no new pictures could be taken even if there was still a
considerable amount of free space in the application area (or in the user content area). In such an
instance, the download and installation of new applications would also not be possible, even if there was
enough free memory in the content area.
Note 2:
Some devices with integrated storage have abandoned the distinction between the application area and
the content area when it comes to a Factory Data Reset. As a result, there is no option in such devices to
perform a Factory Data Reset and preserve content. In such devices, all content is mandatorily and
completely deleted from the device when a reset is performed.
In contrast, Sony Mobile’s memory integration solution makes it possible to preserve user content in this
situation. Therefore, when performing a Factory Data Reset, the default action will still be to only remove
applications and their data, and an option box must be checked if all content is to be removed as well (as
might be desirable when selling the device second-hand, for instance).
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Note 3:
For a developer, it is important to note that from a programming point of view the location names used to
refer to the different memory areas described in Note 1 are still valid, i.e., the area used for applications (“/
data”) is still present, as is the area used for content (“/sdcard”).
In reality, “sdcard” is a so-called “symbolic link” to “/data/media”. However, from inside an Android
application, “/sdcard” can still be used. For example, you can use “sdcard/DCIM/100Android” to find all
camera images. The continued use of “/sdcard” to access the content area ensures compatibility across
different products and Android releases in this regard.
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Trademarks and acknowledgements
All product and company names mentioned herein are the trademarks or registered trademarks of their
respective owners. Any rights not expressly granted herein are reserved. All other trademarks are property
of their respective owners.
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