Comparison between:
- Xiaomi Redmi K30S
- Samsung Galaxy M31 Prime Edition
- Realme Q2i
- Realme Q2

Brand and model

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

Xiaomi Redmi K30SSamsung Galaxy M31 Prime EditionRealme Q2iRealme Q2
Xiaomi Redmi K30S
Prices
Samsung Galaxy M31 Prime EditionRealme Q2i
Prices
Realme Q2
Prices

Design

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

Width76.4 mm
7.64 cm
0.251 ft
3.008 in
75.1 mm
7.51 cm
0.246 ft
2.957 in
-75.1 mm
7.51 cm
0.246 ft
2.957 in
Height165.1 mm
16.51 cm
0.542 ft
6.5 in
159.2 mm
15.92 cm
0.522 ft
6.268 in
-162.2 mm
16.22 cm
0.532 ft
6.386 in
Thickness9.33 mm
0.933 cm
0.031 ft
0.367 in
9.3 mm
0.93 cm
0.031 ft
0.366 in
8.6 mm
0.86 cm
0.028 ft
0.339 in
9.1 mm
0.91 cm
0.03 ft
0.358 in
Weight216 g
0.48 lbs
7.62 oz
191 g
0.42 lbs
6.74 oz
190 g
0.42 lbs
6.7 oz
194 g
0.43 lbs
6.84 oz
Volume117.69 cm³
7.15 in³
111.19 cm³
6.75 in³
-110.85 cm³
6.73 in³
ColorsCosmic Black
Lunar Silver
Ocean Blue
Space Black
Iceberg Blue
Sea of Stars Blue
Moonlight Silver
Silver Wing
Surf Blue
Body materialsGlass
Aluminium alloy
PlasticPlasticPlastic

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
Nano-SIM / microSD
Nano-SIMNano-SIMNano-SIM
Number of SIM cards2222
FeaturesDual SIM stand-by (Both cards are active. When one is busy, the other is not active)Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)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 (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
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)
GSM 850 MHz (B5)
GSM 900 MHz (B8)
GSM 1800 MHz (B3)
GSM 1900 MHz (B2)
CDMA---CDMA 800 MHz (BC0)
W-CDMA--W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 2100 MHz (B1)
W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 900 MHz (B19)
W-CDMA 1700 MHz (B4)
W-CDMA 1800 MHz (B3)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)
UMTSUMTS 850 MHz (B5)
UMTS 900 MHz (B8)
UMTS 1700 MHz (B4)
UMTS 1900 MHz (B2)
UMTS 2100 MHz (B1)
UMTS 850 MHz
UMTS 900 MHz
UMTS 1900 MHz
UMTS 2100 MHz
--
LTELTE-FDD 700 MHz (B28)
LTE-FDD 800 MHz (B20)
LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1500 MHz (B32)
LTE-FDD 1700 MHz (B4)
LTE-FDD 1800 MHz (B3)
LTE-FDD 1900 MHz (B2)
LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 850 MHz
LTE 900 MHz
LTE 1800 MHz
LTE 2100 MHz
LTE 2600 MHz
LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)
LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
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 1900 MHz (B2)
LTE-FDD 2100 MHz (B1)
LTE-FDD 2600 MHz (B7)
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)
5G NR5G-FDD 700 MHz (n28)
5G-FDD 800 MHz (n20)
5G-FDD 900 MHz (n8)
5G-FDD 1800 MHz (n3)
5G-FDD 2100 MHz (n1)
5G-TDD 2500 MHz (n41)
5G-FDD 2600 MHz (n7)
5G-TDD 2600 MHz (n38)
5G-TDD 3500 MHz (n78)
5G-TDD 4700 MHz (n79)
-5G-FDD 850 MHz (n5)
5G-FDD 1800 MHz (n3)
5G-FDD 2100 MHz (n1)
5G-TDD 2500 MHz (n41)
5G-TDD 3500 MHz (n78)
5G-TDD 3700 MHz (n77)
5G-TDD 4700 MHz (n79)
5G-FDD 2100 MHz (n1)
5G-TDD 2500 MHz (n41)
5G-TDD 3500 MHz (n78)
5G-TDD 3700 MHz (n77)
5G-TDD 4700 MHz (n79)

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 20
5G NSA
5G SA
UMTS
EDGE
GPRS
HSPA+
LTE Cat 10
UMTS
EDGE
GPRS
HSPA+
LTE
5G NSA
5G SA
UMTS
EDGE
GPRS
HSPA+
LTE
5G NSA
5G SA
Snapdragon X55 modem
HPUE
HO R&D
---

Operating system

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

Operating system (OS)MIUI 12 (Android 10)Android 10Android 11Android 10
Android 11
User interface (UI)-One UI 2.0realme UI 2.0realme UI 1.0
realme UI 2.0

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 865Samsung Exynos 7 Octa 9611MediaTek Dimensity 720 (MT6853V)MediaTek Dimensity 800U
Process technology7 nm10 nm7 nm7 nm
CPU1x 2.84 GHz Kryo 585, 3x 2.42 GHz Kryo 585, 4x 1.8 GHz Kryo 5854x 2.3 GHz ARM Cortex-A73, 4x 1.7 GHz ARM Cortex-A532x 2.0 GHz ARM Cortex-A76, 6x 2.0 GHz ARM Cortex-A552x 2.4 GHz ARM Cortex-A76, 6x 2.0 GHz ARM Cortex-A55
CPU bits64 bit64 bit64 bit64 bit
Instruction setARMv8-AARMv8-AARMv8.3-AARMv8-A
CPU cores8888
CPU frequency2840 MHz2300 MHz2000 MHz2400 MHz
GPUQualcomm Adreno 650ARM Mali-G72 MP3ARM Mali-G57 MC3ARM Mali-G57 MC3
GPU cores-333
GPU frequency587 MHz---
RAM capacity6 GB
8 GB
12 GB
6 GB4 GB4 GB
6 GB
RAM typeLPDDR5LPDDR4XLPDDR4XLPDDR4X
RAM channelsDouble channelDouble channelDouble channelDouble channel
RAM frequency2750 MHz-2133 MHz2133 MHz
5th Gen AI Engine
Game Turbo 3.0
3000 sq.mm. VC liquid cooling
9 temperature sensors built-in
Al temperature Control
---

Storage

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

Storage128 GB
256 GB
128 GB128 GB128 GB
UFS 3.1UFS 2.1UFS 2.1UFS 2.1

Memory cards

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

Types-microSD
microSDHC
microSDXC
miniSD
microSDHC
microSDXC
miniSD
microSDHC
microSDXC

Display

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

Type/technologyIPSSuper AMOLEDIPSIPS
Diagonal size6.67 in
169.42 mm
16.94 cm
6.4 in
162.56 mm
16.26 cm
6.5 in
165.1 mm
16.51 cm
6.5 in
165.1 mm
16.51 cm
Width2.74 in
69.52 mm
6.95 cm
2.68 in
68.12 mm
6.81 cm
2.67 in
67.75 mm
6.78 cm
2.67 in
67.75 mm
6.78 cm
Height6.08 in
154.5 mm
15.45 cm
5.81 in
147.6 mm
14.76 cm
5.93 in
150.56 mm
15.06 cm
5.93 in
150.56 mm
15.06 cm
Aspect ratio2.222:12.167:12.222:12.222:1
Resolution1080 x 2400 pixels1080 x 2340 pixels1080 x 2400 pixels1080 x 2400 pixels
Pixel density395 ppi
155 ppcm
403 ppi
158 ppcm
405 ppi
159 ppcm
405 ppi
159 ppcm
Color depth24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
24 bit
16777216 colors
Display area85.43 %84.37 %-84.01 %
Other featuresCapacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Capacitive
Multi-touch
Scratch resistant
Capacitive
Multi-touch
Scratch resistant
TrueColor DotDisplay
Corning Gorilla Glass 5
Adaptive-Sync technology
Refresh rate - 30 Hz - 144 Hz
MEMC
HDR10+
98% DCI-P3
96% NTSC
JNCD ~ 0.39
Delta E ~ 0.63
1500:1
500 cd/m²
Peak brightness - 650 cd/m²
Sunlight display 3.0
Reading mode 3.0
TÜV Rheinland Low Blue Light certification
2.5D curved glass screen
Corning Gorilla Glass 3
Infinity-O Display
2.5D curved glass screen2.5D curved glass screen
Corning Gorilla Glass
120 Hz refresh rate

Sensors

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

SensorsProximity
Light
Accelerometer
Compass
Gyroscope
Barometer
Geomagnetic
Fingerprint
Hall
Gravity
Proximity
Light
Accelerometer
Compass
Gyroscope
Fingerprint
Proximity
Light
Accelerometer
Compass
Fingerprint
Proximity
Light
Accelerometer
Compass
Fingerprint
Side-mounted fingerprint sensor
360° ambient light sensor
X-axis linear vibration motor
--Side-mounted 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 IMX682Sony IMX682--
Sensor type-CMOS BSICMOSCMOS
Sensor format1/1.7"1/1.72"-1/2"
Pixel size0.8 µm
0.000800 mm
0.8 µm
0.000800 mm
-0.8 µm
0.000800 mm
ISO-100 - 800--
Aperturef/1.89f/1.8f/2.2f/1.8
Focal length and 35 mm equivalent-3.58 mm
27 mm *(35 mm / full frame)
-26 mm *(35 mm / full frame)
Field of view79.8 °--79.8 °
Number of lenses6-56
Flash typeLEDLEDLEDLED
Image resolution64 MP9280 x 6944 pixels
64.44 MP
4160 x 3120 pixels
12.98 MP
8000 x 6000 pixels
48 MP
Video resolution7680 x 4320 pixels
33.18 MP
3840 x 2160 pixels
8.29 MP
1920 x 1080 pixels
2.07 MP
3840 x 2160 pixels
8.29 MP
Video FPS24 fps30 fps30 fps30 fps
FeaturesAutofocus
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)
Autofocus
Continuous shooting
Digital zoom
Digital 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)
Autofocus
Digital zoom
Digital 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)
Autofocus
Digital zoom
Digital 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)
Super Nightscape
10x digital zoom
Secondary rear camera - 13 MP (ultra-wide angle)
Angle of view - 123° (#2)
Aperture size - f/2.4 (#2)
Pixel size - 1.12 μm (#2)
5-element lens (#2)
Third rear camera - 5 MP (macro)
Autofocus - 2 - 10 cm (#3)
Aperture size - f/2.4 (#3)
Pixel size - 1.12 μm (#3)
3-element lens (#3)
8x digital zoom
Secondary rear camera - 8 MP (ultra-wide angle)
Aperture size - f/2.2 (#2)
Angle of view - 123° (#2)
Sensor size - 1/4" (#2)
Pixel size - 1.12 μm (#2)
Third rear camera - 5 MP (depth-sensing)
Aperture size - f/2.2 (#3)
Fourth rear camera - 5 MP (macro)
Aperture size - f/2.2 (#4)
Secondary rear camera - 2 MP (macro)
Aperture size - f/2.4 (#2)
4 cm shooting distance (#2)
Third rear camera - 2 MP (depth-sensing)
Aperture size - f/2.4 (#3)
Secondary rear camera - 8 MP (ultra-wide-angle)
Angle of view - 119° (#2)
Aperture size - f/2.3 (#2)
5-element lens (#2)
Focal length (35 mm equivalent) - 16 mm (#2)
Third rear camera - 2 MP (macro)
4 cm shooting distance (#3)
Aperture size - f/2.4 (#3)

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 S5K3T2Sony IMX616-Sony IMX471 Exmor RS
Sensor typeISOCELLCMOS BSI--
Sensor format1/3.4"1/2.8"--
Pixel size0.8 µm
0.000800 mm
0.8 µm
0.000800 mm
--
Aperturef/2.2f/2-f/2.1
Focal length and 35 mm equivalent-26 mm *(35 mm / full frame)--
Field of view80 °--79.3 °
Number of lenses5--5
Image resolution20 MP6528 x 4896 pixels
31.96 MP
3264 x 2448 pixels
7.99 MP
4608 x 3456 pixels
15.93 MP
Video resolution1920 x 1080 pixels
2.07 MP
3840 x 2160 pixels
8.29 MP
1920 x 1080 pixels
2.07 MP
1920 x 1080 pixels
2.07 MP
Video FPS30 fps30 fps30 fps30 fps
FeaturesHDR
Face unlock
Face unlock
HDR
Face unlock
HDR
Face unlock
HDR
Nightscape

Audio

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

SpeakerLoudspeaker
Earpiece
Stereo speakers
Loudspeaker
Earpiece
Loudspeaker
Earpiece
Loudspeaker
Earpiece
1012 superlinear speaker
1216 superlinear speaker
Smart PA
Hi-Res Audio
-Hi-Res Audio
Dolby Digital
Hi-Res Audio
Dolby Digital

Radio

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

RadioYesYesYesYes

Tracking/Positioning

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

Tracking/PositioningA-GPS
BeiDou
GPS (L1+L5)
GLONASS (G11)
Galileo (E1+E5a)
QZSS (L1+L5)
GPS
A-GPS
GLONASS
BeiDou
Galileo
GPS
A-GPS
GLONASS
BeiDou
Galileo
QZSS
GPS
A-GPS
GLONASS
BeiDou
Galileo
QZSS

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
802.11ax
802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
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
8x8 MU-MiMO---

Bluetooth

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

Version5.15.05.05.0
FeaturesA2DP
AVRCP
DIP
HFP
HID
HSP
LE
MAP
OPP
PAN
PBAP
A2DP
AVRCP
DIP
HFP
HID
HSP
MAP
OPP
PAN
PBAP
HOGP
A2DP
EDR
HID
LE
A2DP
EDR
HID
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-CUSB Type-C
Version2.02.02.02.0
FeaturesCharging
Mass storage
On-The-Go
Charging
Mass storage
On-The-Go
Charging
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 jackNoYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Infrared
Tethering
NFC
VoLTE
Computer sync
OTA sync
Tethering
Computer sync
OTA sync
Tethering
VoLTE
Computer sync
OTA sync
Tethering
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
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
aptX
aptX HD
eAAC+
FLAC
MP3
WAV
LDAC
LHDC
aptX-Adaptive
PCM
AMR-NB
AAC
AMR
AMR-WB
eAAC+
FLAC
M4A
MIDI
MP3
OGG
WMA
WAV
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC
AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC

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/codecsMKV
MP4
WMV
M4V
WEBM
3GP
3G2
ASF
3GPP
3GPP2
AVI
Flash Video
H.263
H.264
H.265
MKV
MP4
VC-1
VP8
VP9
WebM
WMV
WMV7
WMV8
Xvid
3GPP
AVI
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
Xvid
3GPP
AVI
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
Xvid

Battery

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

Capacity5000 mAh6000 mAh5000 mAh5000 mAh
TypeLi-PolymerLi-IonLi-PolymerLi-Polymer
Charger output power11 V / 3 A5 V / 3 A-5 V / 6 A
Quick charge technologyQualcomm Quick Charge 4+---
FeaturesFast charging
Non-removable
Fast charging
Non-removable
Fast charging
Non-removable
Fast charging
Non-removable
 Xiaomi Redmi K30SSamsung Galaxy M31 Prime EditionRealme Q2iRealme Q2