OnePlus 7 vs Xiaomi Mi A3

$473.98 VIEW ON AMAZON
$208.22 VIEW ON AMAZON

Display

Display size

6.4 inches
6.1 inches

Resolution

1080 x 2340 pixels
720 x 1560 pixels

Pixel density

402 ppi
282 ppi

Technology

AMOLED
Super AMOLED

Screen-to-body ratio

85.63 %
82.56 %

Features

Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Camera

Rear

Dual camera
Triple camera

Main camera

48 megapixels
48 megapixels

Hardware Features

Optical image stabilization, Phase detection autofocus
Phase detection autofocus

Specifications

Aperture size: F1.7; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/2.3"; Pixel size: 0.8 μm

Second camera

5 megapixels
8 megapixels

Hardware Features

Depth information
Ultra-wide

Specifications

Aperture size: F2.4; Pixel size: 1.12 μm
Aperture size: F2.2; Pixel size: 1.12 μm

Third camera

 
2 megapixels

Hardware Features

 
Depth information

Specifications

 
Aperture size: F2.4

Flash

Dual LED
LED

Video recording

3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (480 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features

Time-lapse video, Digital image stabilization, Video calling, Video sharing
Digital image stabilization, Video calling, Video sharing

Front

16 megapixels
32 megapixels

Features

High Dynamic Range mode (HDR)
 

Design

Dimensions

6.21 x 2.94 x 0.32 inches (157.7 x 74.8 x 8.2 mm)
6.04 x 2.83 x 0.33 inches (153.48 x 71.85 x 8.475 mm)

Weight

6.42 oz (182 g)
the average is 6 oz (172 g)
6.13 oz (174 g)
the average is 6 oz (172 g)

Materials

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

Biometrics

2D Face unlock, In-screen fingerprint
2D Face unlock, In-screen fingerprint

Colors

 
Gray, Blue, White

Colors

Mirror gray
 

Multimedia

Headphones

USB Type-C (reversible)
3.5 mm jack

Speakers

Earpiece, Multiple speakers
Earpiece, Loudspeaker

Features

Dolby Atmos, aptX-HD
Album art cover, Background playback

Screen mirroring

Wireless screen share
Wireless screen share

Radio

 
FM

Additional microphone(s)

for Noise cancellation
for Noise cancellation

Hardware & Performance

System chip

Qualcomm Snapdragon 855
Qualcomm Snapdragon 665

Processor

Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm
Octa-core, 2000 MHz, Kryo 260, 64-bit, 11 nm

GPU

Adreno 640
Adreno 610

RAM

8 GB
4 GB

Internal storage

256 GB, not expandable
128 GB

Storage expansion

 
microSDXC up to 256 GB

OS

Android (9.0 Pie)
Android (9.0 Pie)

Connectivity & Features

Bluetooth

5.0
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; Hotspot, Wi-Fi Direct

USB

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

Features

Mass storage device
Mass storage device

Location

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

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass

Other

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

Cellular

LTE (FDD)

Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 29, 32
Bands 1, 2, 3, 4, 5, 7, 8, 20, 28

LTE (TDD)

Bands 34, 38, 39, 40, 41
Bands 38, 40

UMTS

800, 850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data

LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

Battery

Capacity

3700 mAh
4030 mAh

Type

Not user replaceable
Not user replaceable

Charging

Fast charging
Qualcomm Quick Charge 3.0

Phone features

Notifications

Haptic feedback, Music ringtones, Vibration
Music ringtones, Vibration

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording

Shopping information

In The Box

Power Adapter, Type-C Cable (Support USB 2.0), Quick Start Guide, Welcome Letter, Safety Information, Warranty Card, LOGO Sticker, Case, Screen Protector (pre-applied), SIM Tray Ejector
10W charger, USB Type-C cable, SIM eject tool, User guide, Soft case, Warranty card
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