Oppo F31 5G (8GB RAM + 256GB) vs Oppo A78 4G

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Overview

Specs Score79 / 10079 / 100
Display Resolution1080 x 2412 pixels
Better Resolution
1080 x 2400 pixels
Storage256 GB
More Storage
128 GB
Front Camera16 MP
Better Front Camera Resolution
8 MP
Weight180 g
Lighter
Thickness7.9 mm
Slimmer
Battery7000 mAh
Bigger Battery
5000 mAh
Unique Features
5G
No
Water Resistant
No
Reverse Charging
IR Blaster
No
3.5mm Audio Jack
No
NFC
No
No

General

Country of OriginIndia
ModelCPH2781A78 4G
Sim TypeDual Sim, GSM+GSM (Hybrid Slot)Dual Sim, GSM+GSM
Dual SimYesYes
Sim SizeNano+Nano SIMNano SIM
Device TypeSmartphoneSmartphone
Release DateSeptember 15, 2025July 10, 2023
In The BoxHandset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case

Design

Dimensions73.2 x 160 x 7.9 mm
Weight180 g
ColorsMist Black , Aqua Green

Display

TypeColor AMOLED Screen (16M Colors)Color AMOLED Screen (16.7 M)
TouchYes, 360 Hz Touch Sampling RateYes
Size6.57 inches, 1080 x 2412 pixels, 120 Hz6.43 inches, 1080 x 2400 pixels, 90 Hz
Aspect Ratio20:920:9
PPI~ 402 PPI~ 409 PPI
Screen to Body Ratio~ 92.2%~ 90.8%
Glass TypeAGC DT-Star D+Corning Gorilla Glass 5
Features100% DCI-P3, 600nits (Typical), 430nits (Typical)
NotchYes, Punch HoleYes, Punch Hole

Memory

RAM8 GB8 GB
Expandable RAMUpto 8 GB Extra Virtual RAMUpto 8 GB Extra Virtual RAM
Storage256 GB128 GB
Storage TypeUFS 2.2UFS 2.2
Card SlotYes, (Hybrid Slot)Yes, upto 1 TB

Connectivity

GPRSYesYes
EDGEYesYes
3GYesYes
4GYesYes
5GYes
5G Bandsn1/n3/n5/n7/n8/n20/n28A/n28B/n66/n38/n40/n41/n77/n78
VoLTEYes, Dual Stand-ByYes
WifiYes, with wifi-hotspotYes, with wifi-hotspot
Wifi Version802.11 a/b/g/n/ac, Wi-Fi 5 (802.11 ac), 802.11 a/b/g/n, WLAN (2.4 GHz | 5 GHz), WLAN Display, WLAN Tethering, 1 x 1 SOSOWi-Fi 5 (802.11ac)
BluetoothYes, v5.4, Support SBC, AAC, aptX, aptX HD, LDAC, LHDCYes, v5.0, A2DP, LE, aptX HD
USBYes, USB-C v2.0Yes, USB-C v2.0
USB FeaturesUSB on-the-go, USB ChargingUSB on-the-go, USB Charging
IR BlasterYes

Extra

GPSYes, with A-GPS, GLONASS, BDS, GALILEO, QZSSYes, with A-GPS, GLONASS, GALILEO, BDS
Fingerprint SensorYes, SideYes, In Display
Face UnlockYesYes
SensorsGeomagnetic Induction, Ambient Light Induction, Proximity Sensor, Acceleration Sensor, Gravity Sensor, Gyroscope, Infrared Sensor, Step Recording Function, Facial Recognition Sensoraccelerometer, gyro, proximity, compass
3.5mm Headphone JackNoYes
NFCYes, Yes (market/region dependent)
AI FeaturesSmart Document (AI summaries, translations, rewriting), Smart Note (AI-enhanced note-taking), and high-quality scanning. Integrated Google Gemini delivers multimodal AI intelligence
Water ResistanceYes
IP RatingIP69+IP68+IP66IP54
Dust ResistantYesYes
Extra Features4300 mm² VC cooling systemDual Stereo Speakers, LPDDR4x RAM

Camera

Rear Camera50 MP ƒ/1.8 (Wide Angle)
Sensor: OV50D40, Sensor size: 1/2.88″, Single pixel size: 0.612 um, Aperture size: f/1.8, Focal length: 27 mm, Lens configuration: 5P, Supporting AF
2 MP
Sensor: GC02M1-C24YK, Sensor size: 1/5″, Single pixel size: 1.75 um, Aperture size: f/2.4, Focal length: 22 mm, Lens configuration: 3P
50 MP ƒ/1.8 (Wide Angle)
PDAF
2 MP ƒ/2.4 (Depth Sensor)
Auto FocusYesYes
FeaturesPhotos, videos, night, expert, panoramic, portrait, time-lapse, slow-motion, super text, Google lens, extra HD, multi-scene recording, and cute
Video Recording1080p @ 30 fps FHD, 720p1080p @ 30 fps FHD
FlashYes, LEDYes, LED
Front Camera16 MP (Wide Angle)
Sensor size: 1/3.09″, Single pixel size: 1.0 um, Aperture size: f/2.4, Focal length: 23 mm, Lens configuration: 4P
Punch Hole
8 MP ƒ/2 (Wide Angle)
Punch Hole, Screen Flash
Front Video Recording1080p @ 30 fps FHD1080p @ 30 fps FHD

Technical

OSAndroid v15Android v13
Custom UIColorOS 15ColorOS 13.1
ChipsetMediatek Dimensity 6300Qualcomm Snapdragon 680
CPU2.4 GHz, Octa Core Processor2.4 GHz, Octa Core Processor
Core Details2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver
GPUArm Mali-G57 MC2Adreno 610
JavaNoNo
BrowserYesYes

Multimedia

EmailYesYes
MusicYesYes
VideoYesYes
FM RadioNoNo
Document ReaderYesYes

Battery

TypeNon-Removable BatteryNon-Removable Battery
Size7000 mAh5000 mAh, Li-Po Battery
Fast ChargingYes, 80W SUPERVOOC ChargingYes, 67W Fast Charging
Reverse ChargingYes

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