Comparison between:
- Xiaomi Mi A3
- Xiaomi Mi A1
- Realme X2

Brand and model

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

Xiaomi Mi A3Xiaomi Mi A1Realme X2
Xiaomi Mi A3
Prices
Xiaomi Mi A1
Prices
Realme X2
Prices
Model aliasM1906F9SH
M1906F9SI
-Realme X2

Design

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

Width71.85 mm
7.185 cm
0.236 ft
2.829 in
75.8 mm
7.58 cm
0.249 ft
2.984 in
75.2 mm
7.52 cm
0.247 ft
2.961 in
Height153.48 mm
15.348 cm
0.504 ft
6.043 in
155.4 mm
15.54 cm
0.51 ft
6.118 in
158.7 mm
15.87 cm
0.521 ft
6.248 in
Thickness8.475 mm
0.848 cm
0.028 ft
0.334 in
7.3 mm
0.73 cm
0.024 ft
0.287 in
8.6 mm
0.86 cm
0.028 ft
0.339 in
Weight173 g
0.38 lbs
6.13 oz
168 g
0.37 lbs
5.93 oz
182 g
0.4 lbs
6.42 oz
Volume93.46 cm³
5.68 in³
85.99 cm³
5.22 in³
102.63 cm³
6.23 in³
ColorsBlack
White
Blue
Gold
Black
Rose-gold
Red
Star Map Blue
Silver Wing White
Body materialsGlass
Plastic
MetalAluminium alloy
Glass

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 / microSD
Nano-SIM
Nano-SIM / microSD
Nano-SIM
Nano-SIM
Number of SIM cards222
Features--Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)

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
GSM 850 MHz (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
CDMA--CDMA 800 MHz (BC0)
W-CDMAW-CDMA 850 MHz
W-CDMA 900 MHz
W-CDMA 1700 MHz
W-CDMA 1900 MHz
W-CDMA 2100 MHz
-W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1700 MHz (B4)
W-CDMA 2100 MHz (B1)
TD-SCDMA--TD-SCDMA 1880-1920 MHz
TD-SCDMA 2010-2025 MHz
UMTS-UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
-
LTELTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 800 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1700/2100 MHz
LTE 1800 MHz
LTE 1900 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE 700 MHz (B28)
LTE 800 MHz
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 1900 MHz (B39)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1700 MHz (B4)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
LTE-TDD 1900 MHz (B39)
LTE-TDD 2000 MHz (B34)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)

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 Cat 12
UMTS
EDGE
GPRS
HSPA+
LTE Cat 6
UMTS
EDGE
GPRS
HSPA+
LTE Cat 13/Cat 15
--4x4 MIMO

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 9.0 Pie
Android 10
Android 7.1.2 Nougat
Android 8.0 Oreo
Android 8.1 Oreo
Android 9.0 Pie
ColorOS 6.1 (Android 9.0 Pie)

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 665Qualcomm Snapdragon 625 MSM8953Qualcomm Snapdragon 730G
Process technology11 nm14 nm8 nm
CPU4x 2.0 GHz Kryo 260, 4x 1.8 GHz Kryo 260ARM Cortex-A532x 2.2 GHz Kryo 470, 6x 1.8 GHz Kryo 470
CPU bits64 bit64 bit64 bit
Instruction setARMv8ARMv8ARMv8
CPU cores888
CPU frequency2000 MHz2000 MHz2200 MHz
GPUQualcomm Adreno 610Qualcomm Adreno 506Qualcomm Adreno 618
GPU frequency-650 MHz-
RAM capacity4 GB4 GB6 GB
8 GB
RAM typeLPDDR4XLPDDR3LPDDR4X
RAM channelsDouble channelSingle channelDouble channel
RAM frequency1866 MHz933 MHz1866 MHz
Game Turbo 2.0-GameBoost 2.0
Touch Boost 2.0
Frame Boost 2.0

Storage

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

Storage64 GB
128 GB
64 GB64 GB
128 GB
256 GB
UFS 2.1-UFS 2.1

Memory cards

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

TypesmicroSD
microSDHC
microSDXC
microSD
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/technologyAMOLEDIPSSuper AMOLED
Diagonal size6.09 in
154.64 mm
15.46 cm
5.5 in
139.7 mm
13.97 cm
6.4 in
162.56 mm
16.26 cm
Width2.55 in
64.8 mm
6.48 cm
2.7 in
68.49 mm
6.85 cm
2.68 in
68.12 mm
6.81 cm
Height5.53 in
140.4 mm
14.04 cm
4.79 in
121.76 mm
12.18 cm
5.81 in
147.6 mm
14.76 cm
Aspect ratio2.167:11.778:1
16:9
2.167:1
Resolution720 x 1560 pixels1080 x 1920 pixels1080 x 2340 pixels
Pixel density282 ppi
110 ppcm
401 ppi
157 ppcm
403 ppi
158 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
-
Display area82.77 %71.02 %84.52 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
Corning Gorilla Glass 5
60000:1 contrast ratio
350 cd/m²
Peak brightness - 530 cd/m²
102.7% NTSC
HDR10
Display manufacturer - Tianma
Corning Gorilla Glass 3
2.5D curved glass screen
LTPS (Low Temperature PolySilicon)
1000:1 contrast ratio
450 cd/m²
Corning Gorilla Glass 5
COF bonding technology
515 cd/m² brightness

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Hall
Proximity
Light
Accelerometer
Gyroscope
Geomagnetic
Fingerprint
In-display fingerprint sensorFingerprint sensor model - Fingerprint Cards FPC1035Fingerprint sensor model - Goodix 3.0 (In-display optical fingerprint sensor)

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 IMX586 Exmor RSOmniVision OV12A10Samsung S5KGW1
Sensor typeCMOSPureCelISOCELL
Sensor size-5.11 x 3.84 mm
0.25 in
-
Sensor format1/2"-1/1.72"
Pixel size0.8 µm
0.000800 mm
1.277 µm
0.001277 mm
0.8 µm
0.000800 mm
Crop factor-6.77-
ISO-100 - 3200-
Aperturef/1.79f/2.2f/1.8
Focal length and 35 mm equivalent4.71 mm3.81 mm
25.81 mm *(35 mm / full frame)
-
Number of lenses656
Flash typeDual LEDDual LEDDual LED
Image resolution8000 x 6000 pixels
48 MP
4000 x 3000 pixels
12 MP
9280 x 6944 pixels
64.44 MP
Video resolution3840 x 2160 pixels
8.29 MP
3840 x 2160 pixels
8.29 MP
3840 x 2160 pixels
8.29 MP
Video FPS30 fps30 fps30 fps
FeaturesAutofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Phase detection autofocus (PDAF)
Autofocus
Continuous shooting
Digital zoom
Digital image stabilization
Optical image stabilization
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Macro mode
Phase detection autofocus (PDAF)
Sony IMX582 version is also available
Pixel size - 1.6 μm (4-in-1 pixel binning)
1080p @ 120 fps
720p @ 240 fps
Secondary rear camera - 8 MP (ultra-wide angle)
Sensor model - OmniVision OV13855 (#2)
Samsung S5K4H7 version is also available (#2)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 118° (#2)
Third rear camera - 2 MP (depth-sensing)
Sensor model - OmniVision OV02A10 (#3)
GalaxyCore GC2375 version is also available (#3)
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Sensor type - PureCel Plus
720p @ 120 fps
Secondary rear camera - 12 MP (telephoto)
Sensor model - OmniVision OV13880 (#2)
Pixel size - 1.0 μm (#2)
Aperture size - f/2.6 (#2)
5-element lens (#2)
Focal length (35 mm equivalent) - 50 mm (#2)
Pixel size - 1.6 μm (4-in-1 pixel binning)
Sensor type - ISOCELL PLUS
Super Phase Detection
Secondary rear camera - 8 MP (ultra-wide)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.25 (#2)
Angle of view - 119° (#2)
5-element lens (#2)
Third rear camera - 2MP (depth-sensing)
Sensor size - 1/5" (#3)
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Fourth rear camera - 2MP (macro)
Sensor size - 1/5" (#4)
Pixel size - 1.75 μm (#4)
Aperture size - f/2.4 (#4)

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 modelSamsung S5KGD1Samsung S5K5E8Samsung S5KGD1
Sensor type-CMOS BSIISOCELL
Sensor size-2.9 x 2.15 mm
0.14 in
-
Pixel size0.8 µm
0.000800 mm
1.119 µm
0.001119 mm
0.8 µm
0.000800 mm
Crop factor-11.99-
Aperturef/2f/2-
Focal length and 35 mm equivalent3.85 mm3 mm
35.96 mm *(35 mm / full frame)
-
Field of view79 °--
Number of lenses5-5
Image resolution6560 x 4920 pixels
32.28 MP
2592 x 1944 pixels
5.04 MP
6528 x 4896 pixels
31.96 MP
Video resolution1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps
FeaturesFace unlock-Face unlock
Sensor type - ISOCELL PLUS-Sensor type - ISOCELL PLUS
Pixel size - 1.6 μm (4-in-1 pixel binning)

Audio

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

SpeakerLoudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Hi-Res Audio
Smart PA
Dirac HD Sound
DHS Audio Calibration Algorithm
Dolby Atmos
Superlinear speaker
Smart PA

Radio

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

RadioYesYesYes

Tracking/Positioning

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

Tracking/PositioningGPS
A-GPS
GLONASS
BeiDou
GPS
A-GPS
GLONASS
BeiDou
GPS
A-GPS
GLONASS

Wi-Fi

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

Wi-Fi802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display
--2x2 MiMO
256 QAM

Bluetooth

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

Version5.04.25.0
FeaturesA2DP
EDR
HID
LE
A2DP
HID
A2DP
LE

USB

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

Connector typeUSB Type-CUSB Type-CUSB Type-C
Version2.02.02.0
FeaturesCharging
Host
Mass storage
On-The-Go
Charging
Host
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go

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
Infrared
VoLTE
Computer sync
OTA sync
Infrared
Tethering
VoLTE
Computer sync
OTA sync
Tethering
NFC
VoLTE

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
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/codecsAAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AC3
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
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
AVI
DivX
H.263
H.264
H.265
MKV
QuickTime
MP4
VC-1
WebM
WMV
Xvid
3GPP
AVI
H.263
H.264
MKV
MP4
VC-1
VP8
Xvid
3GPP
AVI
DivX
Flash Video
H.263
H.264
MKV
MP4
WebM
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.

Capacity4030 mAh3080 mAh4000 mAh
TypeLi-PolymerLi-PolymerLi-Polymer
Charger output power5 V / 2 A
9 V / 2 A
5 V / 2 A-
Quick charge technologyQualcomm Quick Charge 3.0-VOOC 4.0
FeaturesFast charging
Non-removable
Fast charging
Non-removable
Fast charging
Non-removable
-Battery model: BN3130W fast charging

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 (EU)0.301 W/kg1.75 W/kg-
Body SAR (EU)1.097 W/kg0.76 W/kg-
Head SAR (USA)1.03 W/kg1.26 W/kg-
Body SAR (USA)1.07 W/kg0.17 W/kg-

Additional features

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

Additional featuresM1906F9SI - SAR (Specific Absorption Rate) India: head - 0.527 W/kg; body - 0.722 W/kg
P2i nano-coating
--
 Xiaomi Mi A3Xiaomi Mi A1Realme X2