In depth comparison and review of OPPO A9 2020 and Samsung Galaxy A31. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH1941 | SM-A315G/DS | |
| Form Factor | Touch | Touch | |
| Height | 163.6 mm | 159.3 mm | OPPO A9 2020 has greater height than Samsung Galaxy A31. |
| Width | 75.6 mm | 73.1 mm | OPPO A9 2020 has greater width than Samsung Galaxy A31. |
| Depth | 9.1 mm | 8.6 mm | Samsung Galaxy A31 is narrower than OPPO A9 2020. |
| Weight | 195 g | 185 g | Samsung Galaxy A31 is lighter than OPPO A9 2020. |
| Body Colour | Marine green | Space purple | Prism crush black | |
| Body Material | 3D glass | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.976 W/kg (body), 0.847 W/kg (head), 2.118 W/kg (limb) | 1.68 W/kg (body), 0.488 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C Handset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | TFT | Super AMOLED | |
| Screen Size (Display Size) | 6.5" | 6.4" | OPPO A9 2020 has larger screen size than Samsung Galaxy A31. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 2400 x 1080 pixels | Samsung Galaxy A31 has better screen resolution than OPPO A9 2020. |
| Display Format | - | Full HD+ | |
| Pixel Density | 269 ppi | - | |
| Max Brightness | 480 cd/m² | - | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Contrast Ratio | 1500:1 | - | |
| Display Enhancement Technology | Blue light filter | - | |
| Display Features | In-Cell Display Technology, Sunlight screen | Night mode, Edge-to-Edge screen, Infinity U Display |
| PROCESSOR | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 665 | - | |
|---|---|---|---|
| Clock Speed | - | 2 GHz | |
| Processor Core Qty | - | 8-core | |
| Graphics System (GPU) | Qualcomm ADRENO 610 | - |
| MEMORY | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 64 GB | OPPO A9 2020 has more internal memory than Samsung Galaxy A31. |
| User Memory | - | 46.2 GB | |
| Memory Interface | UFS 2.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 512 GB |
| CAMERA | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 4 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2.25" | - | |
| Sensor Type | CMOS | - | |
| Lens Aperture | F/1.8 | F/2.0 | OPPO A9 2020 has better lens aperture than OPPO A9 2020. |
| Field of View (FoV) | - | 80 degree(s) | |
| Pixel Size | 0.8 μm | - | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 8x | |
| Camera Modes | Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Portrait, Night, Ultra Night Mode 2.0 | Depth bokeh | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 30 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Electronic Image Stabiliser (EIS) | Live Focus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 8 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/4.0" | - | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.25 | F/2.2 | Samsung Galaxy A31 has better second camera lens aperture than OPPO A9 2020. |
| Field of View (2nd Camera) | 119 degree(s) | 123 degree(s) | Samsung Galaxy A31 has larger second camera lens field of view than OPPO A9 2020. |
| Pixel Size (2nd Camera) | 1.12 μm | - | |
| Minimum Focal Length (2nd Camera) | - | 40 mm | |
| Camera Functions (2nd Camera) | - | Macro camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | 5 Megapixel | Samsung Galaxy A31 has higher resolution third camera than OPPO A9 2020. |
|---|---|---|---|
| Sensor Size (3rd Camera) | 1/5" | - | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Pixel Size (3rd Camera) | 1.75 μm | - | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | 5 Megapixel | Samsung Galaxy A31 has higher resolution fourth camera than OPPO A9 2020. |
|---|---|---|---|
| Sensor Size (4th Camera) | 1/5" | - | |
| Lens Aperture (4th Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the fourth camera. |
| Pixel Size (4th Camera) | 1.75 μm | - | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 16 Megapixel | 20 Megapixel | Samsung Galaxy A31 has better front camera resolution than OPPO A9 2020. |
| Sensor Size (Front) | 1/3.1" | - | |
| Lens Aperture (Front) | F/2.0 | F/2.2 | OPPO A9 2020 has better front lens aperture than OPPO A9 2020. |
| Pixel Size (Front) | 1 μm | - | |
| Focus Adjustment | - | Focus free | |
| Camera Modes (Front) | AI Beauty | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - |
| BATTERY AND CHARGING | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 5000 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Standby Time | 450 hours | - | |
| Talk Time | 2700 minutes | 1980 minutes | OPPO A9 2020 has longer battery life when making calls than Samsung Galaxy A31. |
| Run Time Details | Standby: up to 450 hrs Talk: up to 2700 min |
Active online usage (LTE): up to 20 hrs Active online usage (Wi-Fi): up to 20 hrs Playback (video): up to 22 hrs Playback (audio): up to 97 hrs Talk (LTE): up to 1980 min |
| CELLULAR | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | ColorOS 6.0.1 (based on Android 9) | Android 10 | |
| User Interface | - | One UI | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 6, Band 8, Band 19 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 800, 900, 800 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 18, Band 19, Band 20, Band 26, Band 28, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 20, Band 28, Band 38, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Supported Digital Audio Standards | - | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | - | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 | |
| Sound Enhancements | Dolby Atmos sound technology, Hi-Res audio | - |
| FEATURES | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Face recognition | Fingerprint reader (under display) | |
| Additional Phone Features | Multitasking, Game Boost 2.0 | Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Proximity Sensing |
| OTHERS | OPPO A9 2020 | Samsung Galaxy A31 |
|---|
| Included Accessories | Headphones, power adapter, SIM card removal tool, cover, USB-C cable, screen protector (pre-applied) | Power adapter |
|---|
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