Comparison between:
- Apple iPad 2 Wi-Fi
- HTC Nexus 9

Brand and model

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

Apple iPad 2 Wi-FiHTC Nexus 9
Apple iPad 2 Wi-Fi
Prices
HTC Nexus 9
Prices
Model aliasA1395Google Nexus 9
Volantis

Design

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

Width241.2 mm
24.12 cm
0.791 ft
9.496 in
228.25 mm
22.825 cm
0.749 ft
8.986 in
Height185.7 mm
18.57 cm
0.609 ft
7.311 in
153.68 mm
15.368 cm
0.504 ft
6.05 in
Thickness8.8 mm
0.88 cm
0.029 ft
0.346 in
7.95 mm
0.795 cm
0.026 ft
0.313 in
Weight601 g
1.32 lbs
21.2 oz
436 g
0.96 lbs
15.38 oz
Volume394.16 cm³
23.94 in³
278.87 cm³
16.94 in³
Colors-Black
White
Gold
Body materials-Plastic

SIM card

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

SIM card type-Nano-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 1700/2100 MHz
UMTS 1900 MHz
UMTS 2100 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
GPRS
HSPA
LTE

Operating system

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

Operating system (OS)iOS 4
iOS 6.1.3
iOS 7.0.3
Android 5.0.1 Lollipop
Android 5.1.1 Lollipop
Android 6.0 Marshmallow
Android 7.0 Nougat
Android 7.1.1 Nougat

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.

SoCApple A5 APL0498Nvidia Tegra K1-64
Process technology45 nm28 nm
CPUARM Cortex-A9Denver
CPU bits32 bit64 bit
Instruction setARMv7ARMv8
Level 1 cache memory (L1)32 KB + 32 KB-
Level 2 cache memory (L2)1024 KB
1 MB
-
CPU cores22
CPU frequency1000 MHz2300 MHz
GPUPowerVR SGX543 MP2Nvidia Kepler DX11
GPU cores2192
GPU frequency-950 MHz
RAM capacity512 MB2 GB
RAM typeLPDDR2LPDDR3
RAM channelsDouble channel-
RAM frequency400 MHz-

Storage

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

Storage16 GB
32 GB
64 GB
16 GB
32 GB

Display

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

Type/technologyIPSIPS
Diagonal size9.7 in
246.38 mm
24.64 cm
8.9 in
226.06 mm
22.61 cm
Width7.76 in
197.1 mm
19.71 cm
7.12 in
180.85 mm
18.08 cm
Height5.82 in
147.83 mm
14.78 cm
5.34 in
135.64 mm
13.56 cm
Aspect ratio1.333:1
4:3
1.333:1
4:3
Resolution1024 x 768 pixels2048 x 1536 pixels
Pixel density132 ppi
51 ppcm
288 ppi
113 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
Display area65.26 %70.16 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Oleophobic (lipophobic) coating
LED-backlit
Corning Gorilla Glass 3

Sensors

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

SensorsAccelerometer
Compass
Gyroscope
Proximity
Light
Accelerometer
Compass
Gyroscope
Hall

Rear camera

The primary camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.

Sensor model-Sony IMX219PQ Exmor R
Sensor type-CMOS BSI
Sensor size-3.67 x 2.76 mm
0.18 in
Pixel size-1.119 µm
0.001119 mm
Crop factor-9.42
Aperturef/2.4f/2.4
Focal length and 35 mm equivalent-3.1 mm
29.21 mm *(35 mm / full frame)
Number of lenses-5
Flash type-LED
Image resolution960 x 720 pixels
0.69 MP
3280 x 2460 pixels
8.07 MP
Video resolution1280 x 720 pixels
0.92 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps
Features-Autofocus
Digital zoom
Digital image stabilization
Optical image stabilization
Geotagging

Front camera

Modern smartphones have one or more front cameras and their positioning has led to various design concepts – pop-up camera, rotating camera, notch, punch hole, under-display camera, etc.

Sensor model-OmniVision OV9760
Sensor type-CMOS BSI
Sensor size-2.65 x 2 mm
0.13 in
Crop factor-13.04
Aperture-f/2.4
Focal length and 35 mm equivalent-2 mm
26.09 mm *(35 mm / full frame)
Video resolution640 x 480 pixels
0.31 MP
1280 x 720 pixels
0.92 MP
0.3 MP1.6 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.

RadioNo-

Tracking/Positioning

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

Tracking/Positioning-GPS
A-GPS
GLONASS
BeiDou

Wi-Fi

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

Wi-Fi802.11a
802.11b
802.11g
802.11n
Dual band
802.11a
802.11b
802.11g
802.11n
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
-2x2 MiMO

Bluetooth

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

Version2.14.1
FeaturesA2DP
EDR
A2DP

USB

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

Connector type-Micro USB
Version2.02.0
FeaturesCharging
Proprietary
Charging
Mass storage

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
TV-Out
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
HTML
HTML5
CSS 3

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
M4A
MP3
AMR
aptX
eAAC+
FLAC
MIDI
MP3
WMA
WAV

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/codecsH.264
QuickTime
MPEG-4
3GPP
DivX
H.263
H.264
MP4
WMV

Battery

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

Capacity6930 mAh6700 mAh
TypeLi-PolymerLi-Polymer
3G stand-by time-720 h
43200 min
30 days
4G stand-by time-720 h
43200 min
30 days
FeaturesNon-removableNon-removable
Battery life - up to 10 h
Stand by time - up to 720 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)0.76 W/kg-
Body SAR (USA)0.99 W/kg-

Additional features

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

Additional features-425 g (Wi-Fi version)
 Apple iPad 2 Wi-FiHTC Nexus 9