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Google Pixel 4a 5G vs OnePlus 9 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Specs Size
Differences only
9.1
Google Pixel 4a 5G
9.0
OnePlus 9
Google Pixel 4a 5G OnePlus 9
Released · Nov 19, 2020
Released · Apr 02, 2021
6.2-inch · 2340x1080px
6.5-inch · 2400x1080px
Dual camera
Triple camera
6GB · 128GB
8GB · 128GB
3885 mAh
4500 mAh
Check prices Check prices

Design

Dimensions
6.06 x 2.91 x 0.32 inches
153.9 x 74.0 x 8.2 mm 		6.30 x 2.92 x 0.34 inches
160 x 74.2 x 8.7 mm
Weight
5.93 oz (168.0 g) 6.77 oz (192.0 g)
Materials
Back: Plastic Back: Glass (Corning Gorilla Glass)
Frame: Aluminum
Biometrics
Fingerprint (touch) 2D Face unlock, Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Left: Volume control; Right: Lock/Unlock key, Other
Colors
Just black, Clearly white Winter Mist, Arctic Sky, Astral Black

Display

Size
6.2-inch 6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 416 PPI 2400x1080px, 20:9 ratio, 402 PPI
Technology
OLED AMOLED
Refresh rate
60Hz 120Hz
Screen-to-body
82.94 % 87.27 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 765G SM7250-AB (7 nm) Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core
2400 MHz
Kryo 475 		Octa-core
2840 MHz
Kryo 680
GPU
Adreno 620 Adreno 660
RAM
6GB (LPDDR4) 8GB (LPDDR5)
Internal storage
128GB (UFS 2.1) 128GB (UFS 3.1)
Storage expansion
not expandable not expandable
OS
Android (12, 11) Android (11), OxygenOS UI

Battery

Capacity
3885 mAh 4500 mAh
Charging
USB Power Delivery OnePlus Warp Charge, Qi wireless charging
Charge speed
Wired: 18.0W Wired: 65.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Battery Life Estimate
5h 50min
Browsing
11h 29min
Video
9h 16min
Gaming
9h 6min
Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Dual camera Triple camera
Main camera
12.2 MP (OIS, PDAF)
Aperture size: F1.7
Focal length: 28 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm 		48 MP (PDAF)
Aperture size: F1.8
Focal length: 23 mm
Sensor size: 1/1.4"
Pixel size: 1.12 μm
Second camera
16 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1 μm 		50 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 14 mm
Sensor size: 1/1.56"
Third camera
2 MP (Black and White)
Flash
LED Dual LED
Video recording
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps)
OIS, Time-lapse video, EIS 		7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (480 fps)
HDR, Continuous autofocus, EIS
Front
8 MP (Dual-Camera, Time-of-Flight (ToF)), Video capture: 1920x1080 (Full HD) 16 MP (EIS)

Connectivity & Features

Bluetooth
5.0 5.2
WLAN
802.11 a,b,g,n,ac,dual-band
MIMO, Wi-Fi Direct, Hotspot 		802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band
MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.1 Type-C, USB 3.1
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
Sensors
Accelerometer, Gyroscope, Compass, Barometer Accelerometer, Gyroscope, Compass
Other
NFC NFC

Multimedia

Headphones
3.5mm jack No 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Loudspeaker, Multiple speakers
Features
aptX, aptX-HD Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Additional microphone(s)
Noise cancellation Noise cancellation

Cellular

5G
Bands n1, n2, n5, n12, n25, n28, n41, n66, n71, n78, Sub-6 Bands n1, n2, n3, n5, n7, n8, n20, n25, n28, n38, n40, n41, n48, n66, n71, n77, n78
4G (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), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500), 46, 48(3600) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900), 9(1700), 19(800)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
Yes
SIM type
Nano SIM, eSIM Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: Sep 01, 2020
FCC ID value: A4RG025E 		Date approved: Mar 24, 2021
FCC ID value: 2ABZ2-EF136
Measured SAR
Head: 1.20 W/kg
Body: 1.20 W/kg
Simultaneous Transmission: 1.57 W/kg
Wireless Router: 1.00 W/kg 		Head: 1.20 W/kg
Body: 0.78 W/kg
Simultaneous Transmission: 1.48 W/kg
Wireless Router: 1.18 W/kg

Buyers information

MSRP
$ 500 $ 729
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 Warp Charge 65 Power Adapter, Warp Charge Type-C to Type-C Cable, Quick Start Guide, Welcome Letter, Safety Information and Warranty Card, OnePlus Sticker, SIM Tray Ejector

Availability

Officially announced
Sep 30, 2020 Mar 23, 2021

Alternative variants

for Verizon
Weight 6.03 oz (171.0 g)
5G Bands n2, n5, n12, n25, n66, n71, n260, n261, Sub-6, mmWave
MSRP $ 600
With 12GB RAM and 256GB storage
RAM 12GB
Internal storage 256GB
MSRP $ 829
FCC OKs Cingular\'s purchase of AT&T Wireless