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Oppo F31
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  Oppo F31 Oppo A5x
Launch
Version September 2025 May 2025
Network
Technology 5G 4G
Body
Dimensions 158.2 x 75 x 8 mm (6.23 x 2.95 x 0.31 in) 165.7 x 76.2 x 8 mm (6.52 x 3.00 x 0.31 in)
Weight 185 g (6.53 oz) 193 g (6.81 oz)
SIM Nano-SIM + Nano-SIM Nano-SIM and Nano-SIM
Others IP68/IP69 dust tight and water resistant IP65 dust tight and water resistant
Display
Type AMOLED, 1B colors, 120Hz IPS LCD, 90Hz
Size 6.57 inches 6.67 inches
Resolution 1080 x 2372 pixels 720 x 1604 pixels
Protection AGC DT-Star D+ Corning Gorilla Glass 7i
Platform
Operating System Android 15, ColorOS 15 Android 15, ColorOS 15
Chipset Mediatek Dimensity 6300 (6 nm) Qualcomm SM-6115 Snapdragon 6s 4G Gen1 (11 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (4x2.1 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53)
GPU Mali-G57 MC2 Adreno 610
Memory
Card Slot microSDXC microSDXC
Internal 128GB 8GB RAM, 256GB 8GB RAM 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
Camera
Primary 50 MP, f/1.8, (wide) + MP, f/2.4, (depth) 32 MP (f/1.8)
Features LED flash, HDR, panorama LED flash, HDR, panorama
Video 1080p@120fps 1080p@30fps
Selfie 16 MP 1080p@30fps 5 MP (1080p@30fps)
Sound
Loudspeaker Yes, with stereo speakers Yes
3.5mm Jack No Yes
Comms
Wifi a/b/g/n/ac, dual-band a/b/g/n/ac, dual-band
Bluetooth 5.4 5.0
GPS Yes Yes
NFC No No
Infrared - Yes
USB USB Type-C 2.0 USB Type-C 2.0
Features
Sensors Fingerprint (under display, optical), accelerometer, proximity, compass Fingerprint (side-mounted), accelerometer, proximity, compass
Battery
Battery type 7000 mAh 6000 mAh
Charging 80W wired, Reverse wired charging 45W wired
Misc
Colors Midnight Blue, Bloom Red, Cloud Green Midnight Blue, Laser White
Models CPH2781 CPH2725
Price 300 USD 100 USD
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