Xiaomi Mi A3 vs OPPO A78 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.

Xiaomi Mi A3 OPPO A78
Released · Jul 24, 2019
Released · Jan 07, 2023
6.1-inch · 1560x720px
6.6-inch · 1612x720px
Triple camera
Dual camera
4GB · 128GB
4GB · 128GB
4030 mAh
5000 mAh
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Availability

Officially announced
Jul 17, 2019

Design

Dimensions
6.04 x 2.83 x 0.33 inches
153.48 x 71.85 x 8.475 mm
6.45 x 2.96 x 0.31 inches
163.8 x 75.1 x 8 m
Weight
6.13 oz / 173.8 g 6.63 oz / 188.0 g
Materials
Back: Glass (Corning Gorilla Glass 5)
Frame: Plastic
Resistance
Splash, Dust; IP54
Biometrics
2D Face unlock, Optical in-screen fingerprint Fingerprint (touch)
Keys
Back: Volume control, Lock/Unlock key
Colors
Gray, Blue, White Glowing Black, Glowing Purple

Display

Size
6.1-inch, 82.56% screen-to-body 6.6-inch, 83.93% screen-to-body
Type
Super AMOLED IPS LCD, 90Hz, 600 nits
Resolution
1560x720px, 19.5:9 ratio, 282 PPI 1612x720px, 20:9 ratio, 269 PPI
Protection
Corning Gorilla Glass 5

Hardware

System chip
Snapdragon 665 (11 nm) Mediatek Dimensity 700 (7 nm)
Processor
Octa-core
2000 MHz
Kryo 260
Octa-core
2x2.2GHz Cortex-A76
6x2.0G​Hz Cortex-A5
GPU
Adreno 610 Mali-G57 MC2
Memory
4GB (LPDDR4)/128GB
4GB/64GB
4GB/128GB
Storage expansion
microSDXC up to 256 GB microSDXC
OS
Android (11, 10, 9.0 Pie) Android (14, 13, 12)

Battery

Type
4030 mAh 5000 mAh
Charging
Qualcomm Quick Charge 3.0
Charge speed
Wired: 33.0W

Camera

Rear
Triple camera Dual camera
Main camera
48 MP (PDAF)
Aperture size: F1.8
Sensor size: 1/2.3"
Pixel size: 0.8 μm
50 MP (PDAF)
Aperture size: F1.8
Focal length: 27 mm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1.12 μm
2 MP (Depth information)
Third camera
2 MP (Depth information)
Aperture size: F2.4
Flash
LED LED
Video recording
4K UHD (30 fps), 1080p (120 fps), 720p (240 fps)
EIS, Video calling, Video sharing
Yes
Front
32 MP
Video capture: 1080p (30 fps)
8 MP

Connectivity & Features

Bluetooth
5.0 5.3
WLAN
dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
Yes
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
USB
Type-C Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor Accelerometer, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Multiple speakers
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation Noise cancellation

Cellular

5G Bands
5G Ready
LTE Bands
1, 2, 3, 4, 5, 7, 8, 20, 28
TDD Bands
38, 40
3G Bands
5, 8, 4, 2, 1
Data Speed
LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes
SIM type
Nano SIM Dual Nano SIM

Alternative variants

with 64 GB storage
Memory 64GB
FCC OKs Cingular\'s purchase of AT&T Wireless