Comparison between:
- Xiaomi Redmi 8A
- Xiaomi Redmi 9
- Xiaomi Redmi 9A
- Xiaomi Redmi 12 5G

Brand and model

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

Xiaomi Redmi 8AXiaomi Redmi 9Xiaomi Redmi 9AXiaomi Redmi 12 5G
Xiaomi Redmi 8AXiaomi Redmi 9
Prices		Xiaomi Redmi 9A
Prices		Xiaomi Redmi 12 5G
Prices
Model aliasRedmi8A
Red Rice 8A
Red Rice8A
MZB8298IN
M1908C3KG
M1908C3KH		M2004J19G
Redmi 9 Prime
M2004J19AG
M2004J19C
M2004C3MI		M2006C3LG
M2006C3LI
M2006C3LC
M2004C3L		-

Design

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

Width75.41 mm
7.541 cm
0.247 ft
2.969 in		77.01 mm
7.701 cm
0.253 ft
3.032 in		75.9 mm
7.59 cm
0.249 ft
2.988 in		76.28 mm
7.628 cm
0.25 ft
3.003 in
Height156.48 mm
15.648 cm
0.513 ft
6.161 in		163.32 mm
16.332 cm
0.536 ft
6.43 in		164.4 mm
16.44 cm
0.539 ft
6.472 in		168.6 mm
16.86 cm
0.553 ft
6.638 in
Thickness9.4 mm
0.94 cm
0.031 ft
0.37 in		9.1 mm
0.91 cm
0.03 ft
0.358 in		9.1 mm
0.91 cm
0.03 ft
0.358 in		8.17 mm
0.817 cm
0.027 ft
0.322 in
Weight188 g
0.41 lbs
6.63 oz		198 g
0.44 lbs
6.98 oz		196 g
0.43 lbs
6.91 oz		199 g
0.44 lbs
7.02 oz
Volume110.92 cm³
6.74 in³		114.45 cm³
6.95 in³		113.55 cm³
6.9 in³		105.07 cm³
6.38 in³
ColorsMidnight Black
Ocean Blue
Sunset Red		Midnight Grey
Forest Green
Polar White		Granite Gray
Peacook Green
Sky Blue		Jade Black
Pastel Blue
Moonstone Silver
Body materialsPlasticPlasticPlasticGlass
Certification---IP53

SIM card

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

SIM card typeNano-SIMNano-SIMNano-SIMNano-SIM
Nano-SIM / microSD
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 (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)		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 (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)		W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)
W-CDMA 1700 MHz (B4)
W-CDMA 1900 MHz (B2)
W-CDMA 2100 MHz (B1)		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 2100 MHz (B1)
LTELTE-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-FDD 700 MHz (B28)
LTE-FDD 800 MHz (B20)
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 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 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 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)
LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)
5G NR---5G-FDD 700 MHz (n28)
5G-FDD 850 MHz (n5)
5G-FDD 900 MHz (n8)
5G-FDD 1800 MHz (n3)
5G-FDD 2100 MHz (n1)
5G-TDD 2300 MHz (n40)
5G-TDD 3500 MHz (n78)

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
EV-DO Rev. A		UMTS
EDGE
GPRS
HSPA+
LTE Cat 12
EV-DO Rev. A		UMTS
EDGE
GPRS
HSPA+
LTE Cat 4		UMTS
EDGE
GPRS
HSPA+
LTE
EV-DO Rev. A
5G SA
5G NSA

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 10 (Android 9.0 Pie)MIUI V12 (Android 10)
MIUI V12.5 (Android 11)		MIUI 12 (Android 10)MIUI 14 (Android 13)

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 439 (SDM439)MediaTek Helio G80 (MT6769T)MediaTek Helio G25 (MT6762G)Qualcomm Snapdragon 4 Gen 2 (SM4450)
Process technology12 nm12 nm12 nm4 nm
CPU4x 1.95 GHz ARM Cortex-A53, 4x 1.45 GHz ARM Cortex-A532x 2.0 GHz ARM Cortex-A75, 6x 1.8 GHz ARM Cortex-A554x 2.0 GHz ARM Cortex-A53, 4x 1.5 GHz ARM Cortex-A532x 2.2 GHz ARM Cortex-A78, 6x 1.95 GHz ARM Cortex-A55
CPU bits64 bit64 bit64 bit64 bit
Instruction setARMv8-AARMv8.2-AARMv8-AARMv8.2-A
CPU cores8888
CPU frequency1950 MHz2000 MHz2000 MHz2200 MHz
GPUQualcomm Adreno 505ARM Mali-G52 2EEMC2IMG PowerVR GE8320Qualcomm Adreno 613
GPU cores-2--
GPU frequency650 MHz950 MHz650 MHz700 MHz
RAM capacity2 GB
3 GB		3 GB
4 GB
6 GB		2 GB4 GB
6 GB
8 GB
RAM typeLPDDR3LPDDR4XLPDDR3LPDDR4X
RAM channelsSingle channelDouble channelSingle channelDouble channel
RAM frequency800 MHz1800 MHz933 MHz2133 MHz

Storage

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

Storage32 GB32 GB
64 GB
128 GB		32 GB128 GB
256 GB
eMMC 5.1eMMC 5.1eMMC 5.1UFS 2.2

Memory cards

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

TypesmicroSD
microSDHC
microSDXC		microSD
microSDHC
microSDXC		miniSD
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/technologyIPSIPSIPSIPS
Diagonal size6.22 in
157.91 mm
15.79 cm		6.53 in
165.86 mm
16.59 cm		6.53 in
165.86 mm
16.59 cm		6.79 in
172.47 mm
17.25 cm
Width2.66 in
67.6 mm
6.76 cm		2.74 in
69.51 mm
6.95 cm		2.68 in
68.06 mm
6.81 cm		2.73 in
69.33 mm
6.93 cm
Height5.62 in
142.71 mm
14.27 cm		5.93 in
150.6 mm
15.06 cm		5.95 in
151.25 mm
15.13 cm		6.22 in
157.92 mm
15.79 cm
Aspect ratio2.111:12.167:12.222:12.278:1
Resolution720 x 1520 pixels1080 x 2340 pixels720 x 1600 pixels1080 x 2460 pixels
Pixel density271 ppi
106 ppcm		395 ppi
155 ppcm		269 ppi
105 ppcm		396 ppi
155 ppcm
Color depth24 bit
16777216 colors		24 bit
16777216 colors		24 bit
16777216 colors		24 bit
16777216 colors
Display area82.02 %83.49 %82.77 %85.4 %
Other featuresCapacitive
Multi-touch
Scratch resistant		Capacitive
Scratch resistant		Capacitive
Multi-touch
Scratch resistant		Capacitive
Scratch resistant
In-cell
2.5D curved glass screen
1500:1
70.8% NTSC		2.5D curved glass screen
Corning Gorilla Glass 3
400 cd/m²
70% NTSC
1500:1
TÜV Rheinland Certified Reading Mode		2.5D curved glass screen2.5D curved glass screen
Corning Gorilla Glass 3
90 Hz refresh rate
550 cd/m²
1500:1
SGS Low Blue Light Certification

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
Gyroscope
Fingerprint		Proximity
Light
Accelerometer		Proximity
Accelerometer
Fingerprint
Virtual Sensor
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 IMX363 Exmor RS---
Sensor typeCMOSCMOSCMOSCMOS
Sensor format1/2.55"---
Pixel size1.4 µm
0.001400 mm		-1.12 µm
0.001120 mm		0.64 µm
0.000640 mm
Aperturef/1.8f/2.2f/1.8f/1.8
Field of view-75.2 °--
Number of lenses6---
Flash typeLEDLEDLEDLED
Image resolution4032 x 3024 pixels
12.19 MP		4160 x 3120 pixels
12.98 MP		4160 x 3120 pixels
12.98 MP		8190 x 6120 pixels
50.12 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
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
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
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)
Phase detection with Dual PixelSecondary rear camera - 8 MP (ultra-wide)
Sensor model - OmniVision OV8856 (#2)
GalaxyCore GC8034 version also available(#2)
Sensor size - 1/4" (#2)
Pixel size - 1.12 μm (#2)
Aperture size - f/2.2 (#2)
Angle of view - 118° (#2)
Focal length (35 mm equivalent) - 13 mm (#2)
Third rear camera - 2MP (depth-sensing)
Sensor model - GalaxyCore GC02M1 (#3)
Sensor size - 1/5" (#3)
Pixel size - 1.75 μm (#3)
Aperture size - f/2.4 (#3)
Fourth rear camera - 5MP (macro)
Pixel size - 1.12 μm (#4)
Aperture size - f/2.4 (#4)		-Secondary rear camera - 2 MP (depth-sensing)
Sensor size - 1/5" (#3)
Pixel size - 1.75 μm (#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 typeCMOS--CMOS BSI
Pixel size1.12 µm
0.001120 mm		---
Aperturef/2f/2f/2.4f/2
Focal length and 35 mm equivalent--27 mm *(35 mm / full frame)-
Field of view-77.8 °--
Image resolution3264 x 2448 pixels
7.99 MP		3264 x 2448 pixels
7.99 MP		1600 x 1200 pixels
1.92 MP		3264 x 2448 pixels
7.99 MP
Video resolution1280 x 720 pixels
0.92 MP		1920 x 1080 pixels
2.07 MP		1280 x 720 pixels
0.92 MP		1920 x 1080 pixels
2.07 MP
Video FPS-30 fps30 fps30 fps
FeaturesFace unlockFace unlock
HDR
Face detection		Face unlock
HDR		Face unlock
HDR

Audio

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

SpeakerLoudspeaker
Earpiece		Loudspeaker
Earpiece		Loudspeaker
Earpiece		Loudspeaker
Earpiece
Smart PA
0.82 CC acoustic chamber		Smart PA
Dual microphones with active noise cancellation
1216 linear speaker
Vibration motor		-1217 linear speaker

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/PositioningGPS
A-GPS
GLONASS		GPS
A-GPS
GLONASS
Galileo
Beidou		GPS
A-GPS
GLONASS
BeiDou
Galileo		GPS
A-GPS
GLONASS
BeiDou
Galileo

Wi-Fi

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

Wi-Fi802.11b
802.11g
802.11n
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		802.11b
802.11g
802.11n
Wi-Fi Hotspot		802.11a
802.11b
802.11g
802.11n
802.11n 5GHz
802.11ac
Dual band
Wi-Fi Hotspot
Wi-Fi Direct
Wi-Fi Display

Bluetooth

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

Version4.25.05.05.1
FeaturesA2DP
LE		A2DP
EDR
HID
LE		A2DP
EDR
HID
LE		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-CMicro USBUSB Type-C
Version2.02.02.02.0
FeaturesCharging
Host
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 jackYesYesYesYes

Connectivity

Information about other important connectivity technologies supported by the devices.

ConnectivityComputer sync
OTA sync
Tethering
VoLTE		Computer sync
OTA sync
Infrared
Tethering
NFC
VoLTE
ViLTE
VoWiFi		Computer sync
OTA sync
Tethering
VoLTE		Computer sync
OTA sync
Infrared
Tethering
VoLTE
-NFC market dependent--

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
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV		AAC
AAC+
AMR
AMR-WB
aptX
aptX HD
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC		AAC
AAC+
AMR
AMR-WB
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV
LDAC		AAC
AAC+
AMR
AMR-WB
aptX
aptX HD
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/codecs3GPP
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		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 mAh5020 mAh5000 mAh5000 mAh
TypeLi-PolymerLi-IonLi-PolymerLi-Ion
4G talk time---38 h
2280 min
1.6 days
4G stand-by time---672 h
40320 min
28 days
Charger output power5 V / 2 A
9 V / 2 A		5 V / 2 A
9 V / 2 A		5 V / 2 A9 V / 2 A
Quick charge technologyQualcomm Quick Charge 3.0Qualcomm Quick Charge 3.0--
FeaturesNon-removableFast charging
Non-removable		Fast charging
Non-removable		Fast charging
Non-removable
---22.5W charger in the box

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)0.231 W/kg0.789 W/kg0.398 W/kg0.978 W/kg
Body SAR (EU)1.48 W/kg1.065 W/kg1.186 W/kg0.999 W/kg
Head SAR (USA)0.478 W/kg1.084 W/kg0.901 W/kg-
Body SAR (USA)1.074 W/kg1.049 W/kg0.647 W/kg-
Head SAR (India)0.339 W/kg0.506 W/kg0.528 W/kg-
Body SAR (India)1 W/kg0.833 W/kg0.791 W/kg-

Additional features

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

Additional featuresMZB8298IN - SAR (Specific Absorption Rate) India: head - 0.339 W/kg; body - 1.000 W/kg
P2i nano-coating		P2i splash-proof nano-coating
Redmi 9 Prime - Matte Black
Mint Green
Space Blue
Sunrise Flare		--
 Xiaomi Redmi 8AXiaomi Redmi 9Xiaomi Redmi 9AXiaomi Redmi 12 5G