OPPO A91 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.

OPPO A91 OPPO A78
Released · Dec 20, 2019
Released · Jan 07, 2023
6.4-inch · 2400x1080px
6.6-inch · 1612x720px
Dual camera
Dual camera
4GB · 128GB
4GB · 128GB
4025 mAh
5000 mAh
Check prices Check prices

Availability

Officially announced
Dec 20, 2019

Design

Dimensions
6.31 x 2.89 x 0.31 inches
160.2 x 73.3 x 7.9 mm
6.45 x 2.96 x 0.31 inches
163.8 x 75.1 x 8 m
Weight
6.07 oz (172.0 g) 6.63 oz (188.0 g)
Materials
Back: Plastic
Frame: Plastic
Resistance
Splash, Dust; IP54
Biometrics
Optical in-screen fingerprint Fingerprint (touch)
Keys
Left: Volume control; Right: Lock/Unlock key
Colors
Lightening Black, Unicorn White, Blazing Blue Glowing Black, Glowing Purple

Display

Size
6.4-inch, 84.05% screen-to-body 6.6-inch, 83.93% screen-to-body
Type
AMOLED, 60Hz IPS LCD, 90Hz, 600 nits
Resolution
2400x1080px, 20:9 ratio, 411 PPI 1612x720px, 20:9 ratio, 269 PPI
Protection
Corning Gorilla Glass 5

Hardware

System chip
Mediatek Helio P70 MT6771V (12 nm) Mediatek Dimensity 700 (7 nm)
Processor
Octa-core
2100 MHz
Cortex-A73
Octa-core
2x2.2GHz Cortex-A76
6x2.0G​Hz Cortex-A5
GPU
Mali-G72 MP3 Mali-G57 MC2
Memory
4GB (LPDDR4)/128GB (UFS 2.1)
8GB/128GB
4GB/128GB
Storage expansion
microSDXC microSDXC
OS
Android (9.0 Pie) Android (14, 13, 12)

Battery

Type
4025 mAh, Li - Polymer 5000 mAh
Charging
SuperVOOC 3.0
Charge speed
Wired: 20.0W Wired: 33.0W

Camera

Rear
Dual camera Dual camera
Main camera
48 MP (PDAF)
Aperture size: F1.8
Focal length: 26mm (wide) mm
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
Sensor size: 1/1.4"
Pixel size: 1.12 μm
2 MP (Depth information)
Third camera
2 MP (Macro)
Aperture size: F2.4
Sensor size: 1/1.5"
Pixel size: 1.75 μm
Fourth camera
2 MP (Depth information)
Aperture size: F2.4
Sensor size: 1/3.1"
Pixel size: 1 μm
Flash
LED LED
Video recording
1080p (30 fps)
HDR, Time-lapse video, EIS
Yes
Front
16 MP
Video capture: 720p (30 fps)
8 MP

Connectivity & Features

Bluetooth
4.2 5.3
WLAN
b,g,n,ac
Wi-Fi Direct, Hotspot
802.11 b, g, n, ac
a,b,g,n,ac
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
USB
Type-C, USB 2.0 Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, 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
NFC

Multimedia

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

Cellular

5G Bands
5G Ready
4G (FDD) Bands
1, 3, 5, 7, 8
4G (TDD) Bands
38, 40, 41
3G Bands
1, 5, 8
Data Speed
LTE, HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
No
SIM type
Nano SIM Dual Nano SIM

Alternative variants

Comes with 8GB RAM
Memory 8GB
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