Comparison between:
- HTC Nexus 9
- Acer Iconia A1
- Amazon Fire HD 8
- Amazon Kindle Fire HDX 8.9

Brand and model

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

HTC Nexus 9Acer Iconia A1Amazon Fire HD 8Amazon Kindle Fire HDX 8.9
HTC Nexus 9
Prices
Acer Iconia A1Amazon Fire HD 8
Prices
Amazon Kindle Fire HDX 8.9
Prices
Model aliasGoogle Nexus 9
Volantis
Iconia Tab A1-810
A1-810
-Wi-Fi
4G LTE + Wi-Fi

Design

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

Width228.25 mm
22.825 cm
0.749 ft
8.986 in
208.7 mm
20.87 cm
0.685 ft
8.217 in
214 mm
21.4 cm
0.702 ft
8.425 in
231 mm
23.1 cm
0.758 ft
9.094 in
Height153.68 mm
15.368 cm
0.504 ft
6.05 in
145.7 mm
14.57 cm
0.478 ft
5.736 in
128 mm
12.8 cm
0.42 ft
5.039 in
158 mm
15.8 cm
0.518 ft
6.22 in
Thickness7.95 mm
0.795 cm
0.026 ft
0.313 in
11.1 mm
1.11 cm
0.036 ft
0.437 in
7.7 mm
0.77 cm
0.025 ft
0.303 in
7.8 mm
0.78 cm
0.026 ft
0.307 in
Weight436 g
0.96 lbs
15.38 oz
410 g
0.9 lbs
14.46 oz
311 g
0.69 lbs
10.97 oz
384 g
0.85 lbs
13.55 oz
Volume278.87 cm³
16.94 in³
337.52 cm³
20.5 in³
210.92 cm³
12.81 in³
284.68 cm³
17.29 in³
ColorsBlack
White
Gold
BlackBlack
Magenta
Tangerine
Blue
Black
Body materialsPlastic--Magnesium alloy

SIM card

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

SIM card typeNano-SIM--Micro-SIM
Number of SIM cards1--1

Networks

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

GSMGSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
--GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
CDMA2000---1xEV-DO Rev. A
UMTSUMTS 850 MHz
UMTS 900 MHz
UMTS 1700/2100 MHz
UMTS 1900 MHz
UMTS 2100 MHz
--UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
LTELTE 800 MHz
LTE 850 MHz
LTE 1700/2100 MHz
LTE 1800 MHz
LTE 1900 MHz
LTE 2100 MHz
LTE 2600 MHz
--LTE 700 MHz Class 17
LTE 1700/2100 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 technologiesUMTS
EDGE
GPRS
HSPA
LTE
--UMTS
EDGE
GPRS
HSPA+
LTE
EV-DO Rev. A

Operating system

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

Operating system (OS)Android 5.0.1 Lollipop
Android 5.1.1 Lollipop
Android 6.0 Marshmallow
Android 7.0 Nougat
Android 7.1.1 Nougat
Android 4.2 Jelly Bean
Android 4.4.2 KitKat
Fire OS 5.0 (Android 5.1 Lollipop)Fire OS 3.0 (Android 4.2.2 Jelly Bean)
User interface (UI)---Mojito

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.

SoCNvidia Tegra K1-64MediaTek MT8125MediaTek MT8135Qualcomm Snapdragon 800 MSM8974AA
Process technology28 nm28 nm28 nm28 nm
CPUDenverARM Cortex-A72x 1.5 GHz ARM Cortex-A15, 2x 1.2 GHz ARM Cortex-A7Krait 400
CPU bits64 bit32 bit32 bit32 bit
Instruction setARMv8ARMv7ARMv7ARMv7
Level 0 cache memory (L0)---4 KB + 4 KB
Level 1 cache memory (L1)-32 KB + 32 KB32 KB + 32 KB16 KB + 16 KB
Level 2 cache memory (L2)-1024 KB
1 MB
1024 KB
1 MB
2048 KB
2 MB
CPU cores2444
CPU frequency2300 MHz1200 MHz1500 MHz2200 MHz
GPUNvidia Kepler DX11PowerVR SGX544PowerVR G6200Qualcomm Adreno 330
GPU cores192-24
GPU frequency950 MHz300 MHz450 MHz450 MHz
RAM capacity2 GB1 GB1 GB2 GB
RAM typeLPDDR3--LPDDR3
RAM channels---Double channel
RAM frequency---800 MHz

Storage

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

Storage16 GB
32 GB
16 GB8 GB
16 GB
16 GB
32 GB
64 GB

Memory cards

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

Types-microSD
microSDHC
microSD
microSDHC
microSDXC
-

Display

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

Type/technologyIPSIPSIPSIPS
Diagonal size8.9 in
226.06 mm
22.61 cm
7.9 in
200.66 mm
20.07 cm
8 in
203.2 mm
20.32 cm
8.9 in
226.06 mm
22.61 cm
Width7.12 in
180.85 mm
18.08 cm
6.32 in
160.53 mm
16.05 cm
6.78 in
172.31 mm
17.23 cm
7.55 in
191.7 mm
19.17 cm
Height5.34 in
135.64 mm
13.56 cm
4.74 in
120.4 mm
12.04 cm
4.24 in
107.7 mm
10.77 cm
4.72 in
119.81 mm
11.98 cm
Aspect ratio1.333:1
4:3
1.333:1
4:3
1.6:1
16:10
1.6:1
16:10
Resolution2048 x 1536 pixels1024 x 768 pixels1280 x 800 pixels2560 x 1600 pixels
Pixel density288 ppi
113 ppcm
162 ppi
63 ppcm
189 ppi
74 ppcm
339 ppi
133 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area70.16 %63.76 %67.97 %63.13 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Capacitive
Multi-touch
Capacitive
Multi-touch
Corning Gorilla Glass 3LED-backlit--

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Gyroscope
Hall
Light
Accelerometer
Gyroscope
Accelerometer
Gyroscope
Light
Accelerometer
Gyroscope

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 modelSony IMX219PQ Exmor R---
Sensor typeCMOS BSI-CMOS-
Sensor size3.67 x 2.76 mm
0.18 in
---
Pixel size1.119 µm
0.001119 mm
---
Crop factor9.42---
Aperturef/2.4--f/2.2
Focal length and 35 mm equivalent3.1 mm
29.21 mm *(35 mm / full frame)
---
Number of lenses5---
Flash typeLED--LED
Image resolution3280 x 2460 pixels
8.07 MP
2592 x 1944 pixels
5.04 MP
2592 x 1944 pixels
5.04 MP
3264 x 2448 pixels
7.99 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps30 fps
FeaturesAutofocus
Digital zoom
Digital image stabilization
Optical image stabilization
Geotagging
Autofocus
Geotagging
Digital zoom
Self-timer
Autofocus
Digital image stabilization
Geotagging
Touch focus

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 modelOmniVision OV9760---
Sensor typeCMOS BSI---
Sensor size2.65 x 2 mm
0.13 in
---
Crop factor13.04---
Aperturef/2.4---
Focal length and 35 mm equivalent2 mm
26.09 mm *(35 mm / full frame)
---
Image resolution-640 x 480 pixels
0.31 MP
1280 x 720 pixels
0.92 MP
1600 x 1200 pixels
1.92 MP
Video resolution1280 x 720 pixels
0.92 MP
640 x 480 pixels
0.31 MP
1280 x 720 pixels
0.92 MP
1280 x 720 pixels
0.92 MP
Video FPS--30 fps30 fps
1.6 MP---

Audio

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

SpeakerLoudspeaker
Stereo speakers
LoudspeakerLoudspeaker
Stereo speakers
Loudspeaker
Stereo speakers
--Dolby Atmos-

Radio

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

Radio-NoNo-

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GLONASS
BeiDou
GPS-GPS (4G LTE + Wi-Fi)
A-GPS (4G LTE + Wi-Fi)

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
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
802.11b
802.11g
802.11n
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
802.11a
802.11b
802.11g
802.11n
Dual band
Wi-Fi Hotspot
2x2 MiMO---

Bluetooth

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

Version4.14.04.04.0
FeaturesA2DPA2DPA2DP
LE
A2DP

USB

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

Connector typeMicro USBMicro USBMicro USBMicro USB
Version2.02.02.02.0
FeaturesCharging
Mass storage
Charging
Mass storage
Charging
Mass storage
Charging
Mass storage

HDMI

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

HDMI-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 jackYesYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

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

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
HTML
HTML5
CSS 3
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/codecsAMR
aptX
eAAC+
FLAC
MIDI
MP3
WMA
WAV
eAAC+
MP3
WMA
WAV
AAC
AAC+
AC3
AMR
AMR-WB
eAAC+
MIDI
MP3
OGG
WMA
WAV
AC3
AMR
AMR-WB
eAAC+
MIDI
MP3
OGG
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/codecs3GPP
DivX
H.263
H.264
MP4
WMV
H.263
H.264
MPEG-4
Xvid
3GPP
AVI
MKV
MP4
VP8
WebM
WMV
Xvid
3GPP
MKV
MP4
VP8
WebM

Battery

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

Capacity6700 mAh4960 mAh-6000 mAh
TypeLi-PolymerLi-IonLi-PolymerLi-Polymer
3G stand-by time720 h
43200 min
30 days
---
4G stand-by time720 h
43200 min
30 days
---
Charger output power--5 V / 1 A-
FeaturesNon-removableNon-removableNon-removableNon-removable
-Battery life - up to 10 h
Stand by time - up to 350 h
Battery life - up to 8 hBattery life - up to 12 h

Additional features

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

Additional features425 g (Wi-Fi version)---
 HTC Nexus 9Acer Iconia A1Amazon Fire HD 8Amazon Kindle Fire HDX 8.9