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Xiaomi Mi Mix 3 vs OnePlus 9 Pro 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
8.9
Xiaomi Mi Mix 3
9.3
OnePlus 9 Pro
Xiaomi Mi Mix 3 OnePlus 9 Pro
Released · Nov 01, 2018
Released · Apr 02, 2021
6.4-inch
6.7-inch
Dual camera
Quad camera
8GB · 256GB
8GB · 128GB
3200 mAh
4500 mAh
Check prices

Design

Dimensions
6.22 x 2.94 x 0.33 inches
157.89 x 74.69 x 8.46 mm 		6.43 x 2.90 x 0.34 inches
163.2 x 73.6 x 8.7 mm
Weight
7.69 oz (218.0 g) 6.95 oz (197.0 g)
Materials
Back: Ceramic
Frame: Aluminum 		Back: Glass (Corning Gorilla Glass)
Resistance
Water, Dust; IP68
Biometrics
2D Face unlock, Fingerprint (touch) 2D Face unlock, Optical in-screen fingerprint
Features
Notification light
Keys
Right: Volume control, Lock/Unlock key Left: Volume control; Right: Lock/Unlock key, Other
Colors
Black, Green, Blue Morning Mist, Forest Green, Stellar Black

Display

Size
6.4-inch 6.7-inch
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI 3216x1440px, 20.1:9 ratio, 526 PPI
Technology
Super AMOLED AMOLED
Refresh rate
120Hz
Screen-to-body
84.96 % 89.79 %
Peak brightness
600 cd/m2 (nit)
Features
HDR support, Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 845 SDM845 (10 nm) Qualcomm Snapdragon 888 (5 nm)
Processor
Octa-core
2800 MHz
Kryo 385 		Octa-core
Kryo 680
GPU
Adreno 630 Adreno 660
RAM
8GB (LPDDR4) 8GB (LPDDR5)
Internal storage
256GB 128GB (UFS 3.1)
Storage expansion
not expandable not expandable
OS
Android (9.0 Pie) Android (11), OxygenOS UI

Battery

Capacity
3200 mAh 4500 mAh
Type
Li - Polymer
Charging
Qualcomm Quick Charge 4+, Qi wireless charging OnePlus Warp Charge, Qi wireless charging
Charge speed
Wired: 65.0W
Wireless: 50.0W
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 Quad camera
Main camera
12.2 MP (OIS, PDAF)
Aperture size: F1.8
Sensor size: 1/2.55"
Pixel size: 1.4 μm 		48 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 23 mm
Sensor size: 1/1.4"
Pixel size: 1.12 μm
Second camera
12 MP (Telephoto)
Optical zoom: 2.0x
Sensor size: 1/3.4"
Pixel size: 1 μm 		50 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 14 mm
Sensor size: 1/1.56"
Third camera
8 MP (Ultra-wide)
Optical zoom: 3.3x
Aperture size: F2.4
Focal Length: 77 mm
Pixel size: 1 μm
Fourth camera
2 MP (Black and White)
Flash
Dual LED Dual LED
Video recording
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)
Time-lapse video, EIS, Video calling, Video sharing 		7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (120 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (480 fps)
OIS, HDR, Continuous autofocus, EIS
Front
24 MP (Dual-Camera, Flash, HDR) 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 Type-C, USB 3.1
Location
GPS, A-GPS, Glonass, Galileo, BeiDou GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass Accelerometer, Gyroscope, Compass
Other
NFC, VoIP, Tethering, Computer sync, OTA sync NFC

Multimedia

Headphones
No 3.5mm jack No 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker, Multiple speakers
Features
Album art cover, Background playback Dolby Atmos
Screen mirroring
Wireless screen share

Cellular

5G
Bands n1, n2, n3, n5, n7, n8, n20, n25, n28, n38, n40, n41, n48, n66, n71, n77, n78, NSA
4G (FDD)
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), 29(700 d), 30(2300 WCS), 66(AWS-3) 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 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
3G
Bands 6(800), 5(850), 8(900), 4(1700/2100), 3(1800), 2(1900), 1(2100) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900), 9(1700), 19(800)
Data Speed
LTE-A, HSPA, HSUPA 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 Nano SIM
HD Voice
Yes
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Mar 24, 2021
FCC ID value: 2ABZ2-EF14A
Measured SAR
Head: 1.19 W/kg
Body: 0.75 W/kg
Simultaneous Transmission: 1.52 W/kg
Wireless Router: 1.19 W/kg

Buyers information

MSRP
$ 969
In The Box
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
Oct 25, 2018 Mar 23, 2021

Alternative variants

with 6 GB RAM
RAM 6GB
Colors Black
with 12GB RAM and 256GB storage
RAM 12GB
Internal storage 256GB
MSRP $ 1069
with 256 GB storage
Internal storage 256GB
Colors Black
Forbidden City Special Edition
RAM 10GB
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