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Choosing between two smartphones? Use MobilesIQ to compare mobile phone specifications, prices, processors, camera systems, display quality, RAM, storage and battery capacity side by side.
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Specification
OPPO Find X9 Ultra
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OPPO F31 5G
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Brand
OPPO
OPPO
Release Date
—
—
Operating System
Android 16 with ColorOS 16
Android 15
Processor
Qualcomm Snapdragon 8 Elite Gen 5
MediaTek Dimensity 6300
Processor Speed
Up to 4.61 GHz (reported CPU clock speed)
Up to 2.4 GHz
Screen Size
6.82 inches
6.57 inches (approximately 6.5 inches)
Display
LTPO AMOLED / ProXDR AMOLED, 10-bit colour
AMOLED, flat display
Resolution
QHD+, 3168 × 1440 pixels
1080 × 2372 pixels (FHD+)
Refresh Rate
120Hz
120Hz
Brightness
800 nits typical; 1,800 nits HBM; up to 3,600 nits peak as advertised
Up to 1,400 nits (high-brightness mode)
RAM
12GB LPDDR5X
8GB LPDDR4X
Storage
12GB + 512GB
8GB + 128GB, 8GB + 256GB
Battery
7,050mAh typical, silicon-carbon
7,000 mAh, non-removable
Fast Charging
Yes
Yes
Wireless Charging
Yes
No
Colour
Canyon Orange, Tundra Umber
Cloud Green, Midnight Blue, Bloom Red
Rear Camera
200MP main + 50MP ultra-wide + 200MP 3× telephoto + 50MP 10× telephoto + 3.2MP monochrome sensor
50MP main (f/1.8) + 2MP secondary (f/2.4)
Front Camera
50MP with autofocus
16MP (f/2.4)
Network
5G, 4G LTE, 3G, 2G
5G, 4G LTE, 3G, 2G
SIM
Dual Nano-SIM support; eSIM supported
Dual Nano-SIM
Connectivity
Wi-Fi 7, Bluetooth 6.0, USB-C 3.2 Gen 1, GPS, NFC
Wi-Fi 5, Bluetooth 5.4, GPS, USB Type-C, NFC
Security
Ultrasonic in-display fingerprint sensor, face recognition
In-display fingerprint sensor, face unlock
Dimensions
163.16 × 76.97mm; thickness approximately 8.7–9.1mm depending on colour
Approximately 158.2 × 75 × 8.0 mm
Weight
Approximately 235–236g
185 g
Performance Rating
9.5
7.2
Value Rating
7.8
8.0
Specification
OPPO Find X9 Ultra
—
—
OPPO F31 5G
—
—
Brand
OPPO
OPPO
Release Date
—
—
Operating System
Android 16 with ColorOS 16
Android 15
Processor
Qualcomm Snapdragon 8 Elite Gen 5
MediaTek Dimensity 6300
Processor Speed
Up to 4.61 GHz (reported CPU clock speed)
Up to 2.4 GHz
Screen Size
6.82 inches
6.57 inches (approximately 6.5 inches)
Display
LTPO AMOLED / ProXDR AMOLED, 10-bit colour
AMOLED, flat display
Resolution
QHD+, 3168 × 1440 pixels
1080 × 2372 pixels (FHD+)
Refresh Rate
120Hz
120Hz
Brightness
800 nits typical; 1,800 nits HBM; up to 3,600 nits peak as advertised
Up to 1,400 nits (high-brightness mode)
RAM
12GB LPDDR5X
8GB LPDDR4X
Storage
12GB + 512GB
8GB + 128GB, 8GB + 256GB
Battery
7,050mAh typical, silicon-carbon
7,000 mAh, non-removable
Fast Charging
Yes
Yes
Wireless Charging
Yes
No
Colour
Canyon Orange, Tundra Umber
Cloud Green, Midnight Blue, Bloom Red
Rear Camera
200MP main + 50MP ultra-wide + 200MP 3× telephoto + 50MP 10× telephoto + 3.2MP monochrome sensor
50MP main (f/1.8) + 2MP secondary (f/2.4)
Front Camera
50MP with autofocus
16MP (f/2.4)
Network
5G, 4G LTE, 3G, 2G
5G, 4G LTE, 3G, 2G
SIM
Dual Nano-SIM support; eSIM supported
Dual Nano-SIM
Connectivity
Wi-Fi 7, Bluetooth 6.0, USB-C 3.2 Gen 1, GPS, NFC
Wi-Fi 5, Bluetooth 5.4, GPS, USB Type-C, NFC
Security
Ultrasonic in-display fingerprint sensor, face recognition
In-display fingerprint sensor, face unlock
Dimensions
163.16 × 76.97mm; thickness approximately 8.7–9.1mm depending on colour
Approximately 158.2 × 75 × 8.0 mm
Weight
Approximately 235–236g
185 g
Performance Rating
9.5
7.2
Value Rating
7.8
8.0
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