Side by side comparison and review of OPPO R7s and Samsung Galaxy M31s. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | OPPO R7s | Samsung Galaxy M31s |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-M317F/DSN | |
| Form Factor | Touch | Touch | |
| Height | 151.8 mm | 159.3 mm | Samsung Galaxy M31s has greater height than OPPO R7s. |
| Width | 75.4 mm | 74.4 mm | OPPO R7s has greater width than Samsung Galaxy M31s. |
| Depth | 7 mm | 9.3 mm | OPPO R7s is narrower than OPPO R7s. |
| Weight | 155 g | 203 g | OPPO R7s is lighter than OPPO R7s. |
| Body Colour | Rose gold | Black | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.066 W/kg (body), 0.799 W/kg (head) | 1.365 W/kg (body), 0.756 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) | Micro SIM, nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Micro SIM + nano SIM/microSD | - |
| DISPLAY | OPPO R7s | Samsung Galaxy M31s |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | AMOLED | Super AMOLED | |
| Screen Size (Display Size) | 5.5" | 6.5" | Samsung Galaxy M31s has larger screen size than OPPO R7s. |
| Screen Resolution (Display Resolution) | 1920 x 1080 pixels | 2400 x 1080 pixels | Samsung Galaxy M31s has better screen resolution than OPPO R7s. |
| Display Format | Full HD | Full HD+ | |
| Pixel Density | 401 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 O display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| PROCESSOR | OPPO R7s | Samsung Galaxy M31s |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 615 | - | |
|---|---|---|---|
| Clock Speed | 1.5 GHz | 2.3 GHz | Samsung Galaxy M31s has higher clock speed than OPPO R7s. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 405 | - |
| MEMORY | OPPO R7s | Samsung Galaxy M31s |
|---|
| RAM | 4 GB | 6 GB | Samsung Galaxy M31s has more RAM than OPPO R7s. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | Samsung Galaxy M31s has more internal memory than OPPO R7s. |
| User Memory | - | 106.5 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSD, microSDXC - up to 512 GB |
| CAMERA | OPPO R7s | Samsung Galaxy M31s |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 64 Megapixel | Samsung Galaxy M31s has better camera resolution than OPPO R7s. |
| Lens Aperture | F/2.2 | F/1.8 | Samsung Galaxy M31s has better lens aperture than OPPO R7s. |
| Field of View (FoV) | - | 81 degree(s) | |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | - | 10x | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Panorama | Slow motion video, Bokeh Mode, Live Focus mode | |
| Face Recognition (Face ID) | Face detection | - | OPPO R7s has face detection. |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) | Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 480 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF) | Background blur |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 12 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 123 degree(s) |
| 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) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 32 Megapixel | Samsung Galaxy M31s has better front camera resolution than OPPO R7s. |
| Lens Aperture (Front) | F/2.4 | F/2.2 | Samsung Galaxy M31s has better front lens aperture than OPPO R7s. |
| Focus Adjustment | - | Focus free | |
| Camera Features (Front) | - | Live Focus |
| BATTERY AND CHARGING | OPPO R7s | Samsung Galaxy M31s |
|---|
| Battery Capacity (Battery Size) | 3070 mAh | 6000 mAh | Samsung Galaxy M31s has larger battery capacity than OPPO R7s. |
|---|---|---|---|
| Fast Charging Technology | - | Samsung Super Fast Charging | Samsung Galaxy M31s has fast charging technology. |
| Talk Time | - | 3060 minutes | |
| Run Time Details | - | Active online usage (LTE): up to 22 hrs Active online usage (Wi-Fi): up to 22 hrs Playback (video): up to 27 hrs Playback (audio): up to 125 hrs Talk (4G): up to 3060 min |
|
| Battery Technology | Lithium polymer | - |
| CELLULAR | OPPO R7s | Samsung Galaxy M31s |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | ColorOS 2.1 (based on Android 5.1) | - | |
| User Interface | - | One UI | |
| Navigation | GPS, A-GPS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | OPPO R7s | Samsung Galaxy M31s |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | 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 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 4, Band 7, Band 17 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 20, Band 26, Band 28, Band 38, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1700 - 2110 AWS, FDD 2600, FDD 700b | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 DD, FDD 850+, 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 4.0 | Bluetooth 5.0 | |
| NFC | - | Yes | Samsung Galaxy M31s has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | OPPO R7s | Samsung Galaxy M31s |
|---|
| 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, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 |
| FEATURES | OPPO R7s | Samsung Galaxy M31s |
|---|
| 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 | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor | |
| Security Devices | - | Face recognition, fingerprint reader | |
| Additional Phone Features | Noise Cancellation Technology | Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Light Sensing |
| OTHERS | OPPO R7s | Samsung Galaxy M31s |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|
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