Oppo F31 5G CPH2781 Images
Oppo

Oppo F31 5G

Last Updated: October 13, 2025

Oppo F31 5G CPH2781
Key Specifications
Display 6.57″ AMOLED
Storage8GB+256GB
Camera50MP / 16MP
ProcessorDimensity 6300
Battery7000mAh

The Oppo F31 5G (Oppo CPH2781) is a rugged mid-range smartphone built to withstand extreme conditions, offering IP69, IP68, and IP66 ratings for water and dust resistance, along with military-grade shock protection. It features a 6.57-inch FHD+ AMOLED flat display with a 120Hz refresh rate, 1 billion color support, and peak brightness of 1400 nits—ensuring a vibrant and smooth visual experience even in bright outdoor environments.

Under the hood, the device is powered by the MediaTek Dimensity 6300 chipset and packs a massive 7000mAh battery, supported by 80W fast charging for quick power top-ups. On the camera front, it sports a 50MP autofocus main lens and a 2MP monochrome sensor, with special support for underwater photography—making it an ideal companion for adventurous users.

Oppo F31 5G price in India, KSA, UAE, Qatar, Oman, Kuwait, Bahrain, Malaysia, Philippines, UK, Europe, and complete specifications are given below.

Oppo F31 5G Specs (Oppo CPH2781)

Launch
15 September, 2025
Model Number
  • Model Name: Oppo F31 5G
  • Model Number: Oppo CPH2781
  • Series: Oppo F Series
Network
  • Technology: 2G / 3G / 4G / 5G
  • 2G Bands: GSM 900/ 1800MHz
  • 3G Bands: WCDMA B1/ B8
  • 4G Bands: FDD-LTE B1/ B3/ B5/ B8/ B19/ B28B | LTE-TDD B38/ B40/ B41/ B42/ B48
  • 5G Bands: NR n1/ n3/ n5/ n8/ n28B/ n38/ n40/ n41/ n77/ n78
SIM
Dual Nano-SIM or 1 Nano-SIM + 1 MicroSD (Hybrid Slot)
Build
  • Dimensions
    • Width: 75mm
    • Height: 158.2mm
    • Thickness: 8mm
    • Weight: 185g
  • Body
    • Front: AGC DT-Star D+ Glass
    • Back: Plastic
    • Side: Plastic Frame
    • Features: IP69, IP68, and IP66 Dust and Water Resistant (1.5 meters for 30 minutes), 7 Comprehensive Military-Grade Environmental Tests.
    • SAR Value (India): 1.179 W/kg (Head), 0.806 W/kg (Body)
Colors
  • Bloom Red
  • Cloud Green
  • Midnight Blue
Display
  • Size and Type: 6.57-inch (16.69cm) FHD+ AMOLED Display
  • Resolution: 2372 x 1080 pixels
  • Refresh Rate: 120Hz
  • Touch Sampling Rate: 240Hz
  • Screen to Body Ratio: 93%
  • Pixel Density: 397 PPI
  • Color Depth: 1.07 Billion, 10-bit
  • Color Gamut: 100% DCI-P3
  • Brightness: 600nits (typ.), 1400nits (HBM)
  • Protection: AGC DT-Star D+ Glass
  • Features: Widevine L1, Glove Touch, Outdoor Mode 2.0
  • Oppo F31 5G AI Features: AI Erase 2.0, AI Reflection Remover, AI Unblur, AI Recompose, AI Perfect Short, AI Game Boost 2.0, AI LinkBoost 3.0, AI Assistant for Notes, AI Assistant for Documents
Processor
  • Operating System: ColorOS 15; Based on Android 15
  • Chipset: MediaTek Dimensity 6300 (5G)
  • CPU Process: 6 nm
  • CPU Core: Octa-core
  • Primary Clock Speed: 2.4 GHz (2 x Cortex-A76)
  • Secondary Clock Speed: 2.0 GHz (6 x Cortex-A55)
  • GPU: Mali-G57 MP2
  • Updates: 2 Years of Android OS Updates, 3 Years of Security Updates
  • Features: 4300mm² VC Cooling System, AI Game Boost 2.0
  • AnTuTu Score: 425,577
  • GeekBench Benchmark: 782 (Single-Core Score), 2012 (Multi-Core Score)
  • Gameplay: 60fps
Camera

Dual Rear Camera

  • 50MP Wide Camera
    • Sensor: OV50D40
    • Sensor Size: 1/2.88″
    • Aperture: ƒ/1.8
    • Pixel Size: 0.612μm
    • Focal Length: 27mm
    • Field of View: 76°
    • Lens Quantity: 5P
    • Auto Focus
  • 2MP Monochrome Camera
    • Aperture: ƒ/2.4
    • Pixel Size: 1.75μm
    • Field of View: 89°
    • Lens Quantity: 3P
    • Fixed Focus
Rear Camera Features
  • LED Flash
  • HDR
  • Panorama
  • Night Mode
  • Portrait Mode
  • Pro Mode
  • Time-Lapse
  • Slow-Motion
  • Underwater Mode
  • Dual View Video
  • Video Recording: 1080p@30/60fps, 720p@30/60fps

Front Camera

  • 16MP In-Display Camera
    • Sensor: Sony IMX480
    • Sensor Size: 1/3.09″
    • Aperture: ƒ/2.4
    • Pixel Size: 1.0μm
    • Focal Length: 23mm
    • Field of View: 85°
    • Lens Quantity: 4P
    • Fixed Focus
Front Camera Features
  • HDR
  • Panorama
  • Portrait Mode
  • Night Mode
  • Time-Lapse
  • Dual View Video
  • Video Recording: 1080p@30fps, 720p@30fps
Storage
  • RAM: 8GB
  • RAM Type: LPDDR4x
  • ROM: 128GB / 256GB
  • Storage Type: UFS 2.2
  • Card Slot: MicroSD, Up to 1TB
  • Extended RAM: Up to 16GB (8+8)
Connectivity
  • Cable Type: Type-C USB 2.0
  • Wi-Fi: 802.11 a/b/g/n/5, 2.4GHz / 5GHz, Wi-Fi Display, 1 × 1 SISO
  • Bluetooth: 5.4, LE, SBC, AAC, LDAC, aptX, aptX HD
  • Location: GPS, GLONASS, BeiDou, Galileo, QZSS
  • Sound: Dual Stereo Speakers | Up to 300% Volume
  • Headphone Jack: Type-C
  • NFC: Not Supported
Sensors
  • In-Display Optical Fingerprint Sensor
  • Ambient Light Sensor
  • E-Compass
  • Proximity Sensor
  • Accelerometer
Battery
  • 7000mAh Non-removable Lithium Polymer Battery
  • 80W Wired Fast Charging (1% to 55% in 30 minutes, 100% in 60 min), 33W PPS, 13.5W PD
  • Wired Reverse Charging
Oppo F31 5G Price List
India8GB+128GB₹22,999
8GB+256GB₹24,999
KSA8GB+128GBSAR 999
Qatar8GB+128GBQAR 949
Kuwait8GB+128GBKD 79
Oman8GB+128GBOMR 99
UAE8GB+128GBAED 949
Bahrain8GB+128GBBD 99
Malaysia8GB+128GBRM 1,099
Philippines8GB+128GB₱14,990
UK8GB+128GB£229
Europe8GB+128GB€249

Disclaimer. We can not guarantee that the information on this page is 100% correct.

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