Oppo F31 Pro vs Vivo S18

Key Specs

Battery
-	5000 mAh
Display
-	6.78 inches (17.22 cm)
Front Camera
-	50 MP
Processor
-	Qualcomm Snapdragon 7 Gen 3
RAM
-	8 GB
Rear Camera
-	50 MP + 8 MP

Battery

Capacity
5500mAh	5000 mAh
Quick Charging
80W SuperVOOC fast charging	Yes, Flash, 80W
Removable
-	No
Type
-	Li-Polymer
USB Type-C
Yes	Yes

Camera

Front Camera
32MP	-
Rear Camera
50MP + 8MP + 2MP	-

Design

Build Material
Aerospace-grade aluminum alloy	-
Colours
Gemstone Blue, Himalayan White, Festival Pink	Black, Flowers Are Blooming, Clear
Height
-	164.36 mm
Ruggedness
-	Dust proof
Thickness
-	7.45 mm
Water Resistance
IP68 and IP69 ratings	-
Waterproof
-	Yes, Splash proof, IP54
Weight
-	185.8 grams
Width
-	75.1 mm

Display

Aspect Ratio
-	20:9
Bezel-less display
-	Yes with punch-hole display
Display Type
FHD+ AMOLED	AMOLED
Pixel Density
-	453 ppi
Refresh Rate
120Hz	120 Hz
Resolution
-	1260x2800 px (FHD+)
Screen Size
6.78-inch	6.78 inches (17.22 cm)
Screen to Body Ratio (calculated)
-	89.91 %
Screen to Body Ratio (claimed by the brand)
-	93 %
Touch Screen
-	Yes, Capacitive Touchscreen, Multi-touch

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Front Camera

Camera Setup
-	Single
Flash
-	Yes, Dual LED
Resolution
-	50 MP f/2.0, Wide Angle, Primary Camera(22 mm focal length)
Video Recording
-	1920x1080 @ 30 fps

General

Brand
Oppo	vivo
Custom UI
ColorOS 15	Origin OS
Launch Date
September 15, 2025	May 30, 2024 (Expected)
Model
F31 Pro	-
Operating System
Android 15	Android v14

Main Camera

Autofocus
-	Yes
Camera Features
-	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
-	Dual
Flash
-	Yes, Ring LED
Image Resolution
-	8150 x 6150 Pixels
OIS
-	Yes
Resolution
-	50 MP f/1.88, Wide Angle, Primary Camera(1.55" sensor size)8 MP f/2.2, Ultra-Wide Angle Camera
Sensor
-	CMOS image sensor
Settings
-	Exposure compensation, ISO control
Shooting Modes
-	Continuous Shooting High Dynamic Range mode (HDR) SuperMoon
Video Recording
-	3840x2160 @ 30 fps 1920x1080 @ 30 fps

Multimedia

Audio Jack
-	USB Type-C
FM Radio
-	No
Loudspeaker
-	Yes
Stereo Speakers
-	Yes

Network & Connectivity

Bluetooth
5.3	Yes, v5.4
GPS
-	Yes with A-GPS, Glonass
NFC
-	Yes
Network Support
5G	5G Supported in India, 4G Supported in India, 3G, 2G
SIM 1
-	5G Bands: FDD N1 / N3 / N5 / N8 / N28 TDD N38 / N40 / N41 / N77 / N78 4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 18) / 850(band 19) / 850(band 26) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
-	5G Bands: FDD N1 / N3 / N5 / N8 / N28 TDD N38 / N40 / N41 / N77 / N78 4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1700(band 4) / 850(band 5) / 850(band 18) / 850(band 19) / 850(band 26) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
-	SIM1: Nano, SIM2: Nano
SIM Slot(s)
Dual SIM	Dual SIM, GSM+GSM
USB Connectivity
-	Mass storage device, USB charging
VoLTE
-	Yes
Wi-Fi
Wi-Fi 6E	Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz, MIMO
Wi-Fi Features
-	Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
-	Octa core (2.63 GHz, Single core, Cortex A715 + 2.4 GHz, Tri core, Cortex A715 + 1.8 GHz, Quad core, Cortex A510)
Chipset
Qualcomm Snapdragon 7 Gen 3
Fabrication
-	4 nm
Graphics
-	Adreno 720
Processor
MediaTek Dimensity 9300+ (4nm, octa-core)	-
Processor Fabrication
4 nm	-
RAM
8GB or 12GB	8 GB
RAM Type
-	LPDDR4X
RAM type
-	LPDDR4X

Sensors

Fingerprint Sensor
Under-display	Yes
Fingerprint Sensor Position
-	On-screen
Fingerprint Sensor Type
-	Optical
Other Sensors
-	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
expandable via microSD	No
Internal Memory
128GB or 256GB	256 GB
Storage Type
-	UFS 2.2
USB OTG
-	Yes