Comparison between:
- Xiaomi Redmi 6A
- Xiaomi Mi Max 3
- Xiaomi Mi 9X

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

	Xiaomi Redmi 6A	Xiaomi Mi Max 3	Xiaomi Mi 9X

Model alias	Redmi6A	Mi Max3	-

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

Width	71.5 mm 7.15 cm 0.235 ft 2.815 in	87.4 mm 8.74 cm 0.287 ft 3.441 in	-
Height	147.5 mm 14.75 cm 0.484 ft 5.807 in	176.15 mm 17.615 cm 0.578 ft 6.935 in	-
Thickness	8.3 mm 0.83 cm 0.027 ft 0.327 in	7.99 mm 0.799 cm 0.026 ft 0.315 in	-
Weight	145 g 0.32 lbs 5.11 oz	221 g 0.49 lbs 7.8 oz	-
Volume	87.53 cm³ 5.32 in³	123.01 cm³ 7.47 in³	-
Colors	Gold Rose-gold Blue Gray	Black Gold Blue	Blue
Body materials	Polycarbonate	Aluminium alloy	Glass Plastic

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

SIM card type	Nano-SIM	Nano-SIM / microSD Nano-SIM	Nano-SIM Nano-SIM / microSD
Number of SIM cards	2	2	2
Features	Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)	-	-

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

GSM	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz	GSМ 850 МНz GSМ 900 МНz GSМ 1900 МНz
CDMA	CDMA 800 MHz	CDMA 800 MHz	CDMA 800 MHz
W-CDMA	-	W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz	W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz
TD-SCDMA	TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz	TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz	TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz
UMTS	UМТS 900 МНz UМТS 1900 МНz UМТS 2100 МНz	-	-
LTE	LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2600 МНz	LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2600 МНz (В38) LТЕ 800 МНz LТЕ 850 МНz LТЕ 900 МНz LТЕ 1700/2100 МНz LТЕ 1800 МНz LТЕ 2600 МНz	LТЕ 850 МНz LТЕ 900 МНz LТЕ 1800 МНz LТЕ 2100 МНz LТЕ 2600 МНz LТЕ-ТDD 1900 МНz (В39) LТЕ-ТDD 2300 МНz (В40) LТЕ-ТDD 2500 МНz (В41) LТЕ-ТDD 2000 МНz (В34)

Communication between devices within mobile networks is realized via various generations of network technologies, which provide different bandwidth.

Mobile network technologies

UМТS
GРRS
LТЕ Саt 4

UМТS
GРRS
LТЕ

UМТS
GРRS
LТЕ Саt 18

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

Operating system (OS)

МΙUΙ V9.6 (Аndrоid 8.1 Оrео)
МΙUΙ V10.0 (Аndrоid 8.1 Оrео)
МΙUΙ (Аndrоid 9.0 Рiе)

МΙUΙ V9.5 (Аndrоid 8.1 Оrео)
МΙUΙ V10 (Аndrоid 8.1 Оrео)
МΙUΙ V10.2 (Аndrоid 9.0 Рiе)

МΙUΙ V10.2 (Аndrоid 9.0 Рiе)

A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device.

SoC	МеdiаТеk Неliо А22 (МТ6761)	Quаlсоmm Snарdrаgоn 636 (SDМ636)	Quаlсоmm Snарdrаgоn 675 (SМ6150)
Process technology	12 nm	14 nm	11 nm
CPU	4х 2.0 GНz АRМ Соrtех-А53	4х 1.8 GНz АRМ Соrtех-А73, 4х 1.6 GНz АRМ Соrtех-А53 (Κryо 260)	2х 2.0 GНz АRМ Соrtех-А76, 6х 1.7 GНz АRМ Соrtех-А55 (Κryо 460)
CPU bits	64 bit	64 bit	64 bit
Instruction set	ARMv8-A	ARMv8-A	ARMv8.2-A
Level 1 cache memory (L1)	16 KB + 16 KB	16 KB + 16 KB	16 KB + 16 KB
CPU cores	4	8	8
CPU frequency	2200 MHz	1800 MHz	2000 MHz
GPU	IMG PowerVR GE8300	Qualcomm Adreno 509	Qualcomm Adreno 612
GPU frequency	660 MHz	430 MHz	845 MHz
RAM capacity	2 GB 3 GB 4 GB	4 GB 6 GB	6 GB
RAM type	LPDDR4	LPDDR4	LPDDR4X
RAM channels	Single channel	Double channel	Double channel
RAM frequency	1066 MHz	1233 MHz	1766 MHz

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

Storage	16 GB 32 GB 64 GB	64 GB 128 GB	64 GB
	UFS 2.1	UFS 2.0	eMMC 5.1

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

Types

microSD
microSDHC
microSDXC

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

Type/technology	IPS	IPS	Super AMOLED
Diagonal size	5.45 in 138.43 mm 13.84 cm	6.9 in 175.26 mm 17.53 cm	6.39 in 162.31 mm 16.23 cm
Width	2.28 in 58.01 mm 5.8 cm	2.95 in 75.03 mm 7.5 cm	2.86 in 72.59 mm 7.26 cm
Height	4.95 in 125.69 mm 12.57 cm	6.24 in 158.39 mm 15.84 cm	5.72 in 145.17 mm 14.52 cm
Aspect ratio	2.167:1	2.111:1	2:1 2:1 (18:9)
Resolution	1080 x 2340 pixels	720 x 1520 pixels	1080 x 2160 pixels
Pixel density	473 ppi 185 ppcm	244 ppi 95 ppcm	378 ppi 148 ppcm
Color depth	24 bit 16777216 colors	24 bit 16777216 colors	24 bit 16777216 colors
Display area	69.36 %	77.44 %	-
Other features	Capacitive Multi-touch	Capacitive Multi-touch	Capacitive Multi-touch
	2.5D curved glass screen 1000:1 contrast ratio	2.5D curved glass screen 1500:1 contrast ratio 84% NTSC	2.5D curved glass screen LTPS (Low Temperature PolySilicon)

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

Sensors	Proximity Light Accelerometer	Proximity Light Accelerometer Compass Gyroscope Fingerprint	Proximity Light Accelerometer Compass Gyroscope
	-	-	In-display fingerprint sensor

The main camera of the mobile device is usually placed on its back and can be combined with one or more additional cameras.

Sensor model	-	Samsung S5K2L7	Sony IMX586 Exmor RS
Sensor type	CMOS	ISOCELL	CMOS BSI
Sensor format	-	1/2.56"	1/2"
Pixel size	-	1.4 µm 0.001400 mm	0.8 µm 0.000800 mm
ISO	-	-	100 - 3200
Aperture	f/2.2	f/1.9	f/1.79
Focal length and 35 mm equivalent	3.79 mm	3.94 mm	4.74 mm 25 mm ^{*(35 mm / full frame)}
Number of lenses	5	-	6
Flash type	Dual LED	Dual LED	Dual LED
Image resolution	4160 x 3120 pixels 12.98 MP	4032 x 3024 pixels 12.19 MP	8000 x 6000 pixels 48 MP
Video resolution	1920 x 1080 pixels 2.07 MP	3840 x 2160 pixels 8.29 MP	3840 x 2160 pixels 8.29 MP
Video FPS	30 fps	30 fps	30 fps
Features	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 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 Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode RAW Phase detection autofocus (PDAF)
	-	Phase detection with Dual Pixel 720p @ 120 fps Secondary rear camera - 5 MP Sensor model - Samsung S5K5E8 (#2) Sensor size - 1/5" (#2) Pixel size - 1.12 μm (#2) Aperture size - f/2.0 (#2)	Pixel size - 1.6 μm (4-in-1 pixel binning) Phase detection with Dual Pixel 1080p @ 120 fps 720p @ 120 fps

Specifications of the ultra-wide camera of the device. This type of camera captures a wider field of view compared to the main camera.

Image resolution

13 MP

Specifications of the telephoto camera. These cameras are used to capture distant objects by using optical zoom to make them look closer without losing resolution and detail.

Image resolution

8 MP

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 model	-	Samsung S5K4H7	Samsung S5KGD1
Sensor type	-	ISOCELL	-
Sensor format	-	1/4"	-
Pixel size	-	1.12 µm 0.001120 mm	0.8 µm 0.000800 mm
Aperture	f/2.2	f/2	f/2
Focal length and 35 mm equivalent	-	2.99 mm	3.51 mm
Image resolution	2592 x 1944 pixels 5.04 MP	3520 x 2270 pixels 7.99 MP	6784 x 4711 pixels 31.96 MP
Video resolution	1920 x 1080 pixels 2.07 MP	1920 x 1080 pixels 2.07 MP	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps	30 fps	30 fps
Features	Face unlock	Face unlock	Face unlock
	-	-	Sensor type - ISOCELL PLUS

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

Speaker	Loudspeaker Earpiece	Loudspeaker Earpiece	Loudspeaker Earpiece
	-	-	Smart PA Headphone adapter

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

Radio

Yes

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

Tracking/Positioning

GРS
А-GРS
GLОΝАSS

GРS
А-GРS

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

Wi-Fi

802.11b
802.11g
Wi-Fi Disрlаy
802.11а
802.11ас 5GНz

802.11а
802.11b
802.11g
Wi-Fi Disрlаy
802.11а
802.11аd

802.11а
802.11b
802.11g
Wi-Fi Disрlаy
802.11а

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

Version	4.2	5.0	5.0
Features	A2DP HID	A2DP EDR HID LE	A2DP LE

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

Connector type	USB Type-C	Micro USB	Micro USB
Version	2.0	2.0	2.0
Features	Charging Host Mass storage On-The-Go	Charging Host Mass storage On-The-Go	Charging Host Mass storage On-The-Go

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 jack

Yes

Information about other important connectivity technologies supported by the devices.

Connectivity

Computer sync
OTA sync
Tethering
VoLTE

Computer sync
OTA sync
Infrared
VoLTE

Computer sync
OTA sync
Infrared
Tethering
VoLTE

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

Browser

HTML
HTML5
CSS 3

Mobile devices support various audio file formats and codecs, which respectively store and code/decode digital audio data.

Audio file formats/codecs

AAC
AAC+
AC3
AMR
eAAC+
FLAC
MIDI
MP3
OGG
WMA
WAV

AAC
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

Mobile devices support various video file formats and codecs, which respectively store and code/decode digital video data.

Video file formats/codecs

3GPP
AVI
H.263
H.264
MKV
MP4
VC-1
VP8
Xvid

3GPP
AVI
DivX
H.263
H.264
H.265
MKV
QuickTime
MP4
VC-1
WebM
WMV
Xvid

3GPP
AVI
DivX
H.263
H.264
H.265
MKV
MP4
VC-1
Xvid

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

Capacity	3000 mAh	5500 mAh	3300 mAh
Type	Li-Polymer	Li-Polymer	Li-Polymer
Charger output power	5 V / 1 A	5 V / 2 A 9 V / 2 A	5 V / 2 A 9 V / 2 A
Quick charge technology	-	Qualcomm Quick Charge 3.0	Qualcomm Quick Charge 4.0
Features	Non-removable	Fast charging Non-removable	Fast charging Non-removable

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)	1.106 W/kg	1.834 W/kg	-
Body SAR (EU)	1.943 W/kg	1.567 W/kg	-
Head SAR (USA)	1.15 W/kg	-	-
Body SAR (USA)	1.53 W/kg	-	-
Head SAR (India)	0.746 W/kg	-	-
Body SAR (India)	0.715 W/kg	-	-

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

Additional features

M1804C3CG - SAR (Specific Absorption Rate) EU: head - 0.656 W/kg; body - 1.523 W/kg
M1804C3CG - SAR (Specific Absorption Rate) US: head - 0.780 W/kg; body - 1.170 W/kg
M1804C3CH - SAR (Specific Absorption Rate) EU: head - 0.442 W/kg; body - 1.356 W/kg
M1804C3CH - SAR (Specific Absorption Rate) US: head - 0.790 W/kg; body - 1.180 W/kg
M1804C3CI - SAR (Specific Absorption Rate) India: head - 0.746 W/kg; body - 0.715 W/kg

Xiaomi Redmi 6A

Xiaomi Mi Max 3

Xiaomi Mi 9X

Xiaomi Mi Note

Xiaomi Mi 2a

Xiaomi Redmi 3S 32GB

Xiaomi Redmi K70E

Xiaomi Redmi K60E