Comparison between:
- iRULU Walknbook
- Nokia Lumia 2520

Brand and model

Information about the brand, model and model alias (if any) of a specific device.

iRULU WalknbookNokia Lumia 2520
iRULU WalknbookNokia Lumia 2520
Model aliasW1002
W1003
RM-1138
Sirius

Design

Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications.

Width260 mm
26 cm
0.85 ft
10.24 in
267 mm
26.7 cm
0.88 ft
10.51 in
Height174 mm
17.4 cm
0.57 ft
6.85 in
168 mm
16.8 cm
0.55 ft
6.61 in
Thickness9.9 mm
0.99 cm
0.03 ft
0.39 in
8.9 mm
0.89 cm
0.03 ft
0.35 in
Weight587 g
1.29 lbs
20.71 oz
615 g
1.36 lbs
21.69 oz
Volume447.88 cm³
27.2 in³
399.22 cm³
24.24 in³
ColorsOrange
Green
Black
White
Cyan
Red

SIM card

The Subscriber Identity Module (SIM) is used in mobile devices for storing data authenticating the subscribers of mobile services.

SIM card type-Micro-SIM
Number of SIM cards-1

Networks

A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other.

GSM-GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
UMTS-UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
UMTS 1800 MHz
LTE-LTE 800 MHz
LTE 850 MHz
LTE 1700/2100 MHz
LTE 1800 MHz
LTE 1900 MHz
LTE 2100 MHz
LTE 2600 MHz

Mobile network technologies and bandwidth

Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.

Mobile network technologies-UMTS
EDGE Class B
GPRS Class B
HSPA+
LTE Cat 4

Operating system

Operating system is the system software, which manages and controls the functioning of the hardware components of the device.

Operating system (OS)Microsoft Windows 8.1Microsoft Windows RT 8.1

System on Chip (SoC)

A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.

SoCIntel Atom Z3735FQualcomm Snapdragon 800 MSM8974
Process technology22 nm28 nm
CPUIntel Bay TrailKrait 400
CPU bits64 bit32 bit
Instruction setIA-32 (x86), IA-64 (x64)ARMv7
Level 0 cache memory (L0)-4 KB + 4 KB
Level 1 cache memory (L1)24 KB + 32 KB16 KB + 16 KB
Level 2 cache memory (L2)2048 KB
2 MB
2048 KB
2 MB
CPU cores44
CPU frequency1830 MHz2200 MHz
GPUIntel HD GraphicsQualcomm Adreno 330
GPU cores-4
GPU frequency646 MHz450 MHz
RAM capacity2 GB2 GB
RAM typeLPDDR3L-RSLPDDR3
RAM channelsSingle channelDouble channel
RAM frequency1333 MHz800 MHz

Storage

Every mobile device has a built-in storage (internal memory) with a fixed capacity.

Storage32 GB32 GB

Memory cards

Memory cards are used in mobile devices for expanding their external storage capacity.

TypesmicroSD
microSDHC
microSDXC
microSD
microSDHC
microSDXC

Display

The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Type/technologyIPSIPS
Diagonal size10.1 in
256.54 mm
25.65 cm
10.1 in
256.54 mm
25.65 cm
Width8.56 in
217.55 mm
21.75 cm
8.8 in
223.59 mm
22.36 cm
Height5.35 in
135.97 mm
13.6 cm
4.95 in
125.77 mm
12.58 cm
Aspect ratio1.6:1
16:10
1.778:1
16:9
Resolution1280 x 800 pixels1920 x 1080 pixels
Pixel density149 ppi
58 ppcm
218 ppi
85 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
Display area65.59 %62.9 %
Other featuresCapacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
OGS (One Glass Solution)
Viewing angle - 178°
Corning Gorilla Glass 2
ClearBlack display
Refresh rate - 60 Hz
Sunlight readability enhancements

Sensors

Different sensors measure different physical quantities and convert them into signals recognizable by the mobile device.

SensorsAccelerometerProximity
Light
Accelerometer
Compass
Gyroscope

Primary camera

The primary camera of the mobile device is usually placed at its back and is used for taking photos and recording videos.

Sensor typeCMOSCMOS
Sensor size-4.23 x 3.17 mm
0.21 in
Pixel size-1.37 µm
0.00137 mm
Crop factor-8.19
Aperture-f/1.9
Focal length-3.17 mm
25.95 mm *(35 mm / full frame)
Image resolution2560 x 1920 pixels
4.92 MP
3088 x 1744 pixels
5.39 MP
Video resolution-1920 x 1080 pixels
2.07 MP
Video FPS-30 fps
FeaturesDigital zoom
Self-timer
Autofocus
Digital zoom
Geotagging
White balance settings
Exposure compensation
-Carl Zeiss optics

Secondary camera

Secondary cameras are placed above the screen of the device and are usually used for video calls, gesture recognition, etc.

Aperture-f/2.4
Image resolution1600 x 1200 pixels
1.92 MP
-
Video resolution-1280 x 720 pixels
0.92 MP
Video FPS-30 fps
-2 MP

Audio

Information about the type of speakers and the audio technologies supported by the device.

SpeakerLoudspeaker
Stereo speakers
Loudspeaker
Stereo speakers

Radio

The radio in a mobile device is a built-in FM radio receiver.

RadioNoNo

Tracking/Positioning

Information about the positioning and navigation technologies supported by the device.

Tracking/Positioning-GPS
A-GPS
GLONASS

Wi-Fi

Wi-Fi is a technology that provides wireless data connections between various devices within a short range.

Wi-Fi802.11b
802.11g
802.11n
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
Dual band
Wi-Fi Hotspot

Bluetooth

Bluetooth is a standard for secure wireless data transfer between different types of devices over short distances.

Version4.04.0
FeaturesA2DPA2DP

USB

The Universal Serial Bus (USB) is an industry standard that allows different electronic devices to exchange data.

Connector typeMicro USBMicro USB
Version2.03.0
FeaturesCharging
Mass storage
On-The-Go
Host
Mass storage

HDMI

The High-Definition Multimedia Interface (HDMI) is considered to be the digital alternative of the analog audio/video interface standards.

HDMIMini HDMI (Type C)Micro HDMI (Type D)

Headphone jack

The headphone jack is an audio phone connector, a.k.a. an audio jack. The most widely used one in mobile devices is the 3.5 mm headphone jack.

Headphone jackYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
DLNA
NFC

Browser

A web browser is a software application for accessing, fetching, displaying and navigating through information on the World Wide Web.

BrowserHTML
HTML5
CSS 3
HTML
HTML5

Audio file formats/codecs

Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.

Audio file formats/codecsAAC
AC3
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
eAAC+
M4A
MIDI
MP3
WMA
WAV
MP4

Video file formats/codecs

Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.

Video file formats/codecs3GPP
AVI
H.263
H.264
MKV
QuickTime
MP4
VC-1
Xvid
3GPP
3GPP2
MP4
MPEG-4
WMV

Battery

The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices.

Capacity7800 mAh8000 mAh
TypeLi-PolymerLi-Ion
2G talk time-10 h
600 min
0.4 days
2G stand-by time-600 h
36000 min
25 days
3G talk time-10 h
600 min
0.4 days
3G stand-by time-600 h
36000 min
25 days
Charger output power5 V / 2 A-
FeaturesNon-removableNon-removable
Battery life - up to 7 h-

Specific Absorption Rate (SAR)

The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg.

Body SAR (EU)-1.59 W/kg

Additional features

Some devices have additional features, different from the standard ones above, but equally important and worth mentioning.

Additional featuresDocking connectorAttachable Nokia Power Keyboard dock (QWERTY keyboard)
 iRULU WalknbookNokia Lumia 2520