Google Pixel 4a vs Xiaomi Redmi Note 9

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from $465
from $180

Display

Size

5.8 inches
6.5 inches

Resolution

2340 x 1080 pixels, 19.5:9 ratio,
444 PPI
2340 x 1080 pixels, 19.5:9 ratio,
395 PPI

Technology

OLED
IPS LCD

Screen-to-body

82.53 %
83.52 %

Features

HDR video support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 730 SM7150-AA
MediaTek Helio G85

Processor

Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
Octa-core, 2000 MHz, Arm Cortex-A75 and ArmCortex-A55, 64-bit, 12 nm

GPU

Adreno 618
Mali G52 MC2

RAM

6GB LPDDR4
3GB LPDDR4

Internal storage

128GB, not expandable
64GB (eMMC 5.1)

Storage expansion

 
microSDXC up to 128 GB

Device type

Smartphone
Smartphone

OS

Android (11, 10)
Android (10), Xiaomi MI UI

Battery

Capacity

3140 mAh
5020 mAh

Type

Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable

Battery life test results

Charging

USB Power Delivery
Fast charging, Reverse charging

Max charge speed

Wired: 18.0W
Wired: 18.0W

Camera

Rear

Single camera
Quad camera

Main camera

12.2 MP (OIS, PDAF)
48 MP (PDAF)

Specifications

Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.2 μm

Third camera

 
2 MP (Macro, Autofocus)

Specifications

 
Aperture size: F2.4; Pixel size: 1.75 μm

Fourth camera

 
2 MP

Specifications

 
Aperture size: F2.4; Sensor size: 1/5"; Pixel size: 1.7 μm

Video recording

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

Features

EIS
 

Front

8 MP
13 MP (HDR)

Design

Dimensions

5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)
6.39 x 3.04 x 0.35 inches (162.3 x 77.2 x 8.9 mm)

Weight

5.04 oz (143.0 g)
the average is 6.3 oz (179 g)
7.02 oz (199.0 g)
the average is 6.3 oz (179 g)

Materials

Back: Plastic; Frame: Plastic
Frame: Plastic

Resistance

 
Splash

Biometrics

Fingerprint (touch)
Fingerprint (touch)

Keys

Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors

Just black
Forest green, Polar white, Midnight gray

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
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), 39(1900+), 40(2300), 41(2600+)
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 11 (600/75 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, eSIM
Nano SIM

VoLTE

 
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features

aptX, aptX-HD
 

Screen mirroring

Wireless screen share
Wireless screen share

Additional microphone(s)

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth

5.1
5.0

Wi-Fi

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

USB

Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0

Features

Charging
Charging

Location

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

Sensors

Accelerometer, Gyroscope, Compass, Barometer
Accelerometer, Gyroscope, Compass

Other

NFC
NFC, Infrared

Hearing aid compatible

M3, T4
 

Regulatory Approval

FCC approval

 
 

Date approved

Jun 25, 2020
 

FCC ID value: A4RG025J link
 

Measured SAR

 
 

Head

1.18 W/kg
 

Body

1.19 W/kg
 

Simultaneous Transmission

1.59 W/kg
 

Wireless Router

1.00 W/kg
 

Buyers information

Price

$ 349
 

In The Box

18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool
22.5W Charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced

Aug 03, 2020
Apr 30, 2020
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
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