Comparison between:
- HTC Desire A8181
- HTC Evo 4G
- HTC EVO 3D

Brand and model

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

HTC Desire A8181HTC Evo 4GHTC EVO 3D
HTC Desire A8181HTC Evo 4GHTC EVO 3D
Model aliasBravo
A8181
Supersonic
PC36100
X515M

Design

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

Width60 mm
6 cm
0.197 ft
2.362 in
66 mm
6.6 cm
0.217 ft
2.598 in
65 mm
6.5 cm
0.213 ft
2.559 in
Height119 mm
11.9 cm
0.39 ft
4.685 in
122 mm
12.2 cm
0.4 ft
4.803 in
126 mm
12.6 cm
0.413 ft
4.961 in
Thickness11.9 mm
1.19 cm
0.039 ft
0.469 in
13 mm
1.3 cm
0.043 ft
0.512 in
12.1 mm
1.21 cm
0.04 ft
0.476 in
Weight135 g
0.3 lbs
4.76 oz
170 g
0.37 lbs
6 oz
170 g
0.37 lbs
6 oz
Volume84.97 cm³
5.16 in³
104.68 cm³
6.36 in³
99.1 cm³
6.02 in³
ColorsBlack
White
Brown
Silver
--

SIM card

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

SIM card typeMini-SIMMini-SIMMini-SIM
Number of SIM cards111

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
CDMA-CDMA 800 MHz
CDMA 1900 MHz
WiMAX
-
CDMA2000-1xEV-DO Rev. A-
UMTSUMTS 900 MHz
UMTS 2100 MHz
-UMTS 850 MHz
UMTS 900 MHz
UMTS 1700/2100 MHz
UMTS 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 Class 10
GPRS Class 10
HSPA
EV-DO Rev. AUMTS
EDGE Class 12
GPRS Class 12
HSPA

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 2.1 Eclair
Android 2.2.2 Froyo
Android 2.1 Eclair
Android 2.3 Gingerbread
Android 2.3.x Gingerbread
Android 4.0.x Ice Cream Sandwich

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.

SoCQualcomm Snapdragon S1 QSD8250Qualcomm Snapdragon S1 QSD8250Qualcomm Snapdragon S3 MSM8660
Process technology65 nm65 nm45 nm
CPUScorpionScorpionScorpion
CPU bits32 bit32 bit32 bit
Instruction setARMv7ARMv7ARMv7
Level 1 cache memory (L1)32 KB + 32 KB32 KB + 32 KB32 KB + 32 KB
Level 2 cache memory (L2)256 KB
0.25 MB
256 KB
0.25 MB
512 KB
0.5 MB
CPU cores112
CPU frequency1000 MHz1000 MHz1200 MHz
GPUQualcomm Adreno 200Qualcomm Adreno 200Qualcomm Adreno 220
RAM capacity576 MB512 MB1 GB
RAM type--LPDDR2
RAM channels--Single channel
RAM frequency--333 MHz
ROM capacity512 MB
524288 KB
1024 MB
1.04858e+6 KB
-

Storage

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

Storage512 MB1 GB1 GB

Memory cards

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

TypesmicroSD
microSDHC
microSD
microSDHC
microSD
microSDHC
Included card4 GB
4096 MB
8 GB
8192 MB
-

Display

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

Type/technologyAMOLED / Super LCDTFT3D LCD
Diagonal size3.7 in
93.98 mm
9.4 cm
4.3 in
109.22 mm
10.92 cm
4.3 in
109.22 mm
10.92 cm
Width1.9 in
48.35 mm
4.84 cm
2.21 in
56.19 mm
5.62 cm
2.11 in
53.55 mm
5.35 cm
Height3.17 in
80.59 mm
8.06 cm
3.69 in
93.66 mm
9.37 cm
3.75 in
95.19 mm
9.52 cm
Aspect ratio1.667:1
5:3
1.667:1
5:3
1.778:1
16:9
Resolution480 x 800 pixels480 x 800 pixels540 x 960 pixels
Pixel density252 ppi
99 ppcm
217 ppi
85 ppcm
256 ppi
100 ppcm
Color depth24 bit
16777216 colors
-24 bit
16777216 colors
Display area54.75 %65.57 %62.44 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
Corning Gorilla GlassCorning Gorilla GlassCorning Gorilla Glass
3D - Parallax barrier (Glasses-free)

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass
Proximity
Light
Accelerometer
Compass
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.

Flash typeLEDDual LEDDual LED
Image resolution2592 x 1944 pixels
5.04 MP
3264 x 2448 pixels
7.99 MP
2560 x 1920 pixels
4.92 MP
Video resolution800 x 480 pixels
0.38 MP
1280 x 720 pixels
0.92 MP
1280 x 720 pixels
0.92 MP
Video FPS15 fps-30 fps
Features-Autofocus
Digital zoom
Geotagging
Autofocus
Geotagging
White balance settings
Scene mode
--Stereoscopic photos - 2MP

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.

Video resolution--640 x 480 pixels
0.31 MP
-1.3 MP0.3 MP

Audio

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

SpeakerLoudspeakerLoudspeakerLoudspeaker

Radio

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

RadioYesYesYes
-RDS-

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GPS
A-GPS
GPS
A-GPS

Wi-Fi

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

Wi-Fi802.11b
802.11g
Wi-Fi Hotspot
802.11b
802.11g
802.11b
802.11g
802.11n
Wi-Fi Hotspot
-Wi-Fi Router
WiMAX 802.16e
-

Bluetooth

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

Version2.12.13.0
FeaturesA2DP
AVRCP
EDR
FTP
GAP
GOEP
HFP
HSP
OPP
PBAP
SPP
A2DP
EDR
A2DP
AVRCP
EDR
FTP
GAVDP
GOEP
HFP
HID
HSP
OPP
PBAP
SPP
SDP

USB

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

Connector typeMicro USBMicro USBMicro USB
Version2.02.02.0
FeaturesCharging
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)Micro USB to HDMI MHL adapter

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 jackYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

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

Browser

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

BrowserHTML
Flash
HTML
Flash
HTML
Flash

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+
AMR
M4A
MIDI
MP3
OGG
WMA
WAV
WMA9
AAC
AAC+
AMR
MIDI
MP3
WMA
WAV
WMA9
AAC+
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/codecs3GPP
3GPP2
H.263
H.264
MP4
MPEG-4
WMV
H.263
H.264
MP4
MPEG-4
WMV9
H.263
H.264
MP4
WMV
Xvid

Battery

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

Capacity1400 mAh1500 mAh1730 mAh
TypeLi-IonLi-IonLi-Ion
2G talk time6 h 40 min
6.7 h
400.2 min
0.3 days
5 h 12 min
5.2 h
312 min
0.2 days
9 h 20 min
9.3 h
559.8 min
0.4 days
2G stand-by time340 h
20400 min
14.2 days
146 h
8760 min
6.1 days
358 h
21480 min
14.9 days
3G talk time6 h 30 min
6.5 h
390 min
0.3 days
5 h 12 min
5.2 h
312 min
0.2 days
7 h 45 min
7.8 h
465 min
0.3 days
3G stand-by time360 h
21600 min
15 days
146 h
8760 min
6.1 days
420 h
25200 min
17.5 days
FeaturesRemovableRemovableRemovable

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.

Head SAR (USA)1.48 W/kg--
Body SAR (USA)0.69 W/kg--

Additional features

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

Additional featuresOptical trackpadKickstand-
 HTC Desire A8181HTC Evo 4GHTC EVO 3D