In depth comparison and review of OPPO R9 Plus 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 R9 Plus | Samsung Galaxy A31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-A315G/DS | |
| Form Factor | Touch | Touch | |
| Height | 163.1 mm | 159.3 mm | OPPO R9 Plus has greater height than Samsung Galaxy A31. |
| Width | 80.8 mm | 73.1 mm | OPPO R9 Plus has greater width than Samsung Galaxy A31. |
| Depth | 7.4 mm | 8.6 mm | OPPO R9 Plus is narrower than OPPO R9 Plus. |
| Weight | 185 g | 185 g | Both phones are the same weight. |
| Body Colour | Gold | Prism crush black | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | - | 1.68 W/kg (body), 0.488 W/kg (head) | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset 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 (SIM1 and SIM2/MicroSD slots) | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | Super AMOLED | |
| Screen Size (Display Size) | 6" | 6.4" | Samsung Galaxy A31 has larger screen size than OPPO R9 Plus. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2400 x 1080 pixels | Samsung Galaxy A31 has better screen resolution than OPPO R9 Plus. |
| Display Format | Full HD | Full HD+ | |
| Pixel Density | 367 ppi | - | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Display Features | - | Night mode, Edge-to-Edge screen, Infinity U Display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 4 (scratch resistant glass) | - |
| PROCESSOR | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Processor Type (CPU) | Qualcomm | - | |
|---|---|---|---|
| Processor Number | MSM8976 | - | |
| Clock Speed | - | 2 GHz | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 510 | - |
| MEMORY | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| RAM | 4 GB | 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 64 GB | Both phones have the same internal memory capacity. |
| User Memory | - | 46.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 512 GB |
| CAMERA | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 16 Megapixel | 48 Megapixel | Samsung Galaxy A31 has better camera resolution than OPPO R9 Plus. |
| Lens Aperture | F/2.0 | F/2.0 | Both phones have the same camera lens aperture. |
| Field of View (FoV) | - | 80 degree(s) | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 8x | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama | Depth bokeh | |
| Face Recognition (Face ID) | Face detection | - | OPPO R9 Plus has face detection. |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p), 3840 x 2160 (4K) | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | - | Live Focus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 123 degree(s) | |
| Minimum Focal Length (2nd Camera) | - | 40 mm | |
| Camera Functions (2nd Camera) | - | Macro camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (4th Camera) | - | F/2.4 | |
| 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 R9 Plus. |
| Lens Aperture (Front) | F/2.0 | F/2.2 | OPPO R9 Plus has better front lens aperture than OPPO R9 Plus. |
| Focus Adjustment | - | Focus free |
| BATTERY AND CHARGING | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Battery Capacity (Battery Size) | 4120 mAh | 5000 mAh | Samsung Galaxy A31 has larger battery capacity than OPPO R9 Plus. |
|---|---|---|---|
| Talk Time | - | 1980 minutes | |
| Run Time Details | - | 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 |
|
| Battery Technology | Lithium polymer | - |
| CELLULAR | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Technology | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | ColorOS 3.0 (based on Android 5.1) | Android 10 | |
| User Interface | - | One UI | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, A-GPS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM, 800 CDMA2000 1X | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, 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 1800+, FDD 850, 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 4.1 | Bluetooth 5.0 | |
| NFC | - | Yes | Samsung Galaxy A31 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Supported Digital Audio Standards | WAV, MP3, FLAC, eAAC+ | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | MPEG-4, H.264 | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 |
| FEATURES | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, digital compass, gyro sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | Active noise-cancellation | Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Proximity Sensing |
| OTHERS | OPPO R9 Plus | Samsung Galaxy A31 |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|
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