Google Pixel 4a vs Xiaomi Redmi Note 9 Specs Comparison

Availability

Officially announced
Aug 03, 2020	Apr 30, 2020
Prices (MSRP)
$349

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	7.02 oz / 199.0 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

Display

Size
5.8-inch, 82.53% screen-to-body	6.5-inch, 83.52% screen-to-body
Type
OLED, 60Hz, HDR	IPS LCD
Resolution
2340x1080px, 19.5:9 ratio, 444 PPI	2340x1080px, 19.5:9 ratio, 395 PPI
Protection
Corning Gorilla Glass 3	Corning Gorilla Glass 5

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
2 (Good)	0.8 (Excellent)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 730G SM7150-AA (8 nm)	MediaTek Helio G85 (12 nm)
Processor
Octa-core 2200 MHz Kryo 470	Octa-core 2000 MHz Arm Cortex-A75 and ArmCortex-A55
GPU
Adreno 618	Mali G52 MC2
Memory
6GB (LPDDR4)/128GB (UFS 2.1)	3GB (LPDDR4)/64GB (eMMC 5.1) 4GB/128GB
Storage expansion
not expandable	microSDXC up to 128 GB
OS
Android (12, 11, 10)	Android (10)

Battery

Type
3140 mAh, Li - Polymer	5020 mAh, Li - Polymer
Charging
USB Power Delivery	Fast charging Reverse wired charging
Charge speed
Wired: 18.0W	Wired: 18.0W

PhoneArena Battery Tests

Battery Life Estimate

4h 15min

Browsing

9h 27min

Video

6h 48min

Gaming

4h 51min

Battery Life Estimate

Untested

Browsing

Untested

Video

10h 43min

Gaming

7h 34min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera	Quad camera
Main camera
12.2 MP (OIS, PDAF) Aperture size: F1.7 Focal length: 27 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.2 μm
Third camera
	2 MP (Macro, Autofocus) Aperture size: F2.4 Pixel size: 1.75 μm
Fourth camera
	2 MP Aperture size: F2.4 Sensor size: 1/5" Pixel size: 1.7 μm
Flash
LED	LED
Video recording
4K UHD (30 fps), 1080p (120 fps), 720p (240 fps) EIS	1080p (30 fps), 720p (120 fps)
Front
8 MP Video capture: 1080p (30 fps)	13 MP (HDR) Video capture: 1080p (30 fps)

Connectivity & Features

Bluetooth
5.1	5.0
WLAN
dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 3.1	Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T4
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC	NFC, Infrared

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)
Noise cancellation	Noise cancellation

Cellular

LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 20, 25, 26, 28, 29, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 20, 28
TDD Bands
38, 39, 40, 41	38, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
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

Regulatory Approval

FCC approval
Date approved: Jun 25, 2020 FCC ID value: A4RG025J
Measured SAR
Head: 1.18 W/kg Body: 1.19 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.00 W/kg

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