OPPO
Oppo F31
Announced Date:2025, September 17Release Date and Availability:Available. Released 2025, September 27Technology:GSM / HSPA / LTE / 5G2G Bands:GSM 850 / 900 / 1800 / 1900Display Type:AMOLED, 1B colors, 120Hz, 600 nits (typ), 1400 nits (HBM)Display Size:6.57 inches, 105.0 cm2 (~88.5% screen-to-body ratio) inches
Pros
Cons
Where to Buy
Currently unavailable for this variant.
Basics
Announced Date
2025, September 17
Release Date and Availability
Available. Released 2025, September 27
Operating System
Android 15, ColorOS 15
UI / Skin
-
Network
Technology
GSM / HSPA / LTE / 5G
2G Bands
GSM 850 / 900 / 1800 / 1900
3G Bands
HSDPA 900 / 2100
4G Bands
1, 3, 5, 8, 19, 28, 38, 40, 41, 42, 48
5G Bands
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Speed
HSPA, LTE, 5G
Display
Display Type
AMOLED, 1B colors, 120Hz, 600 nits (typ), 1400 nits (HBM)
Display Size
6.57 inches, 105.0 cm2 (~88.5% screen-to-body ratio)inches
Resolution
1080 x 2372 pixels (~397 ppi density)
Pixel Density
397 ppippi
Refresh Rate
120HzHz
Adaptive Refresh Rate
-
Peak Brightness
600 nitsnits
HDR Support
-
Screen Protection
AGC DT-Star D+
Design & Build
Dimensions
158.2 x 75 x 8 mm (6.23 x 2.95 x 0.31 in)
Height
158.2 mmmm
Width
75 mmmm
Thickness
8 mmmm
Weight
185 g (6.53 oz)g
IP Rating
-
Build Materials
Nano-SIM + Nano-SIM
Fingerprint Scanner
Fingerprint (under display, optical)
Colors
Midnight Blue, Bloom Red, Cloud Green
Stylus
-
Performance
Chipset
Mediatek Dimensity 6300 (6 nm)
CPU
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
Mali-G57 MC2
Process Node
6 nm
RAM
8 GB
Storage
128 GB / 256 GB
Storage Type
128GB 8GB RAM, 256GB 8GB RAM
Expandable Storage
microSDXC
Cooling System
-
Rear Camera
Main Camera Setup
50 MP, f/1.8, (wide), PDAF
Auxiliary lens
Main Camera
50 MP, f/1.8, (wide), PDAF
Ultrawide Camera
-
Telephoto Camera
-
Periscope Camera
-
Camera Features
LED flash, HDR, panorama
OIS
-
Optical Zoom
-
Video Recording
1080p@30/60/120fps
Memory
RAM Options
8GB
Storage Options
128, 256GB
Front Camera
Selfie Camera
16 MP, f/2.4, (wide)
Front Video Recording
Panorama
Features
Other Features
-
Battery & Charging
Battery Capacity
7000 mAhmAh
Battery Type
Si
Wired Charging
80W wired, 33W PPS, 13.5W PDW
Wireless Charging
-W
Reverse Charging
Reverse wired chargingW
Replaceable Battery
-
Comms
SIM Type
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
MIL-STD-810H compliant*
* does not guarantee ruggedness or use in extreme conditions
5G Support
yes
eSIM
-
Wi-Fi Version
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth Version
5.4, A2DP, LE, aptX HD
NFC
no
USB Type
USB Type-C 2.0, OTG
IR Blaster
-
GPS
GPS, GALILEO, GLONASS, BDS, QZSS
Radio
Unspecified
Misc
Models
CPH2781
SAR
1.18 W/kg (head) 0.81 W/kg (body)
SAR EU
₹ 26,999
3rd Party Test Data
Source
-
Performance
-
Display
-
Loudspeaker
-
Battery
-
EU Label
Energy
-
Battery
-
Freefall
-
Repairability
-
Audio & Sensors
Stereo Speakers
yes
3.5mm Jack
no
Sensors
accelerometer, proximity, compass
Accelerometer
yes
Gyroscope
-
Proximity Sensor
yes
Compass
yes
Barometer
-
Box & Extras
Charger Included
-
Case Included
-