Xiaomi Mi A3 vs Xiaomi Redmi 9

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$180 VIEW ON amazon
$141 VIEW ON amazon

Display

Size

6.1 inches
6.5 inches

Resolution

1560 x 720 pixels, 19.5:9 ratio,
282 PPI
2340 x 1080 pixels, 19.5:9 ratio,
395 PPI

Technology

Super AMOLED
IPS LCD

Screen-to-body

82.56 %
83.27 %

Features

Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 665
MediaTek Helio G80

Processor

Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm
Octa-core, 2000 MHz, Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm

GPU

Adreno 610
Mali G52 MC2

RAM

4GB LPDDR4
3GB LPDDR4

Internal storage

128GB
32GB (eMMC 5.1)

Storage expansion

microSDXC up to 256 GB
microSDXC

OS

Android (10, 9.0 Pie)
Android

Battery

Capacity

4030 mAh
5020 mAh

Type

Not user replaceable
Not user replaceable

Battery life test results

 

Charging

Qualcomm Quick Charge 3.0
Qualcomm Quick Charge 3.0

Max charge speed

 
Wired: 18.0W

Camera

Rear

Triple camera
Quad camera

Main camera

48 MP (PDAF)
13 MP (PDAF)

Specifications

Aperture size: F1.8; Sensor size: 1/2.3"; Pixel size: 0.8 μm
Aperture size: F2.2

Second camera

8 MP (Ultra-wide)
8 MP (Ultra-wide)

Specifications

Aperture size: F2.2; Pixel size: 1.12 μm
Aperture size: F2.2

Third camera

2 MP (Depth information)
5 MP (Macro)

Specifications

Aperture size: F2.4
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Video recording

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
1920x1080 (Full HD)

Features

EIS, Video calling, Video sharing
 

Front

32 MP
8 MP (HDR)

Design

Dimensions

6.04 x 2.83 x 0.33 inches (153.48 x 71.85 x 8.475 mm)
6.43 x 3.03 x 0.36 inches (163.32 x 77.01 x 9.1 mm)

Weight

6.13 oz (173.8 g)
the average is 6.2 oz (176 g)
6.98 oz (198.0 g)
the average is 6.2 oz (176 g)

Materials

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
 

Biometrics

2D Face unlock, In-screen fingerprint
2D Face unlock, Fingerprint (touch)

Colors

Gray, Blue, White
Carbon gray, Sunset purple, Ocean green

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)

LTE (TDD)

Bands 38(2600), 40(2300)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

HD Voice

 
Yes

VoLTE

 
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
 

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
FM

Additional microphone(s)

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot

USB

Type-C (reversible)
Type-C (reversible), USB 2.0

Features

Charging, Mass storage device
Charging

Location

GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass

Other

Infrared, VoIP, Tethering, Computer sync, OTA sync
NFC, Infrared

Buyers information

In The Box

10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card
10W Charger, TPU case, USB Type-C cable, SIM eject tool, Warranty card, User guide
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