Detailed comparison and review of OPPO Reno Z and Samsung Galaxy M31s. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
DESIGN AND DIMENSIONS | OPPO Reno Z | Samsung Galaxy M31s |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | CPH1979 | SM-M317F/DSN | |
Form Factor | Touch | Touch | |
Height | 157.3 mm | 159.3 mm | Samsung Galaxy M31s has greater height than OPPO Reno Z. |
Width | 74.9 mm | 74.4 mm | OPPO Reno Z has greater width than Samsung Galaxy M31s. |
Depth | 9.1 mm | 9.3 mm | OPPO Reno Z is narrower than OPPO Reno Z. |
Weight | 186 g | 203 g | OPPO Reno Z is lighter than OPPO Reno Z. |
Body Colour | Jet black | Aurora purple | Black | |
Body Material | 3D glass | - | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 0.932 W/kg (head), 3.99 W/kg (limb), 1.175 W/kg (body) | 1.365 W/kg (body), 0.756 W/kg (head) | |
Connector Type | USB Type-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | OPPO Reno Z | Samsung Galaxy M31s |
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Display Type | OLED display | OLED display | |
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Display Technology | AMOLED | Super AMOLED | |
Screen Size (Display Size) | 6.4" | 6.5" | Samsung Galaxy M31s has larger screen size than OPPO Reno Z. |
Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 2400 x 1080 pixels | Samsung Galaxy M31s has better screen resolution than OPPO Reno Z. |
Display Format | - | Full HD+ | |
Pixel Density | 402 ppi | - | |
Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
Display Enhancement Technology | OnCell technology | - | |
Display Features | - | Night mode, Edge-to-Edge screen, Infinity O display | |
Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
PROCESSOR | OPPO Reno Z | Samsung Galaxy M31s |
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Processor Type (CPU) | MediaTek Helio P90 | - | |
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Clock Speed | - | 2.3 GHz | |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
64-bit Architecture | Yes | - | OPPO Reno Z has 64-bit architecture. |
Graphics System (GPU) | 9XM-HP8 | - |
MEMORY | OPPO Reno Z | Samsung Galaxy M31s |
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RAM | 4 GB | 6 GB | Samsung Galaxy M31s has more RAM than OPPO Reno Z. |
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Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
User Memory | - | 106.5 GB | |
Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 512 GB |
CAMERA | OPPO Reno Z | Samsung Galaxy M31s |
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MAIN CAMERA |
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Number of Main Cameras | 2 | 4 | |
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Sensor Resolution | 48 Megapixel | 64 Megapixel | Samsung Galaxy M31s has better camera resolution than OPPO Reno Z. |
Sensor Size | 1/2" | - | |
Sensor Name | Sony Exmor RS IMX586 sensor | - | |
Lens Aperture | F/1.7 | F/1.8 | OPPO Reno Z has better lens aperture than OPPO Reno Z. |
Field of View (FoV) | - | 81 degree(s) | |
Focus Adjustment | Automatic | Automatic | |
Digital Zoom | - | 10x | |
Special Effects | HDR | - | |
Camera Modes | Time-lapse mode, Slow motion mode, Expert Mode, Backlit, Portrait, Pano mode, Dazzle Colour Mode, Ultra Night Mode 2.0 | Slow motion video, Bokeh Mode, Live Focus mode | |
Light Source | LED flash | LED flash | |
Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, 1280 x 720 (720p) at 60 fps | 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) | Noise reduction, EIS video stabilisation, 4-in-1 resolution focus technology | Background blur |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 5 Megapixel | 12 Megapixel | Samsung Galaxy M31s has better second camera resolution than OPPO Reno Z. |
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Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Samsung Galaxy M31s has better second camera lens aperture than OPPO Reno Z. |
Field of View (2nd Camera) | - | 123 degree(s) |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Camera Functions (3rd Camera) | - | Depth camera |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 5 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.4 | |
Camera Functions (4th Camera) | - | Macro camera |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 32 Megapixel | 32 Megapixel | Both phones have the same front camera resolution. |
Lens Aperture (Front) | F/2.0 | F/2.2 | OPPO Reno Z has better front lens aperture than OPPO Reno Z. |
Focus Adjustment | - | Focus free | |
Camera Features (Front) | - | Live Focus |
BATTERY AND CHARGING | OPPO Reno Z | Samsung Galaxy M31s |
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Battery Capacity (Battery Size) | 4035 mAh | 6000 mAh | Samsung Galaxy M31s has larger battery capacity than OPPO Reno Z. |
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Fast Charging Technology | VOOC Flash Charge technology 3.0 | Samsung Super Fast Charging | Both phones have 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 |
CELLULAR | OPPO Reno Z | Samsung Galaxy M31s |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | ColorOS 6 (based on Android 9) | - | |
User Interface | - | One UI | |
Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | OPPO Reno Z | Samsung Galaxy M31s |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE | |
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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 17, Band 20, Band 26, 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 700b, FDD 800 DD, FDD 850+, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
Wireless Interface | Wi-Fi | 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 | - |
MEDIA | OPPO Reno Z | Samsung Galaxy M31s |
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Supported Digital Audio Standards | - | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
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Supported Digital Video Standards | - | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | |
Sound Enhancements | Dolby Atmos Surround Sound | - |
FEATURES | OPPO Reno Z | Samsung Galaxy M31s |
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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 | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, geomagnetic sensor | |
Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader | |
Additional Phone Features | Protective O-Dot, Game Boost 2.0 | Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Light Sensing |
OTHERS | OPPO Reno Z | Samsung Galaxy M31s |
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Included Accessories | Headphones, power adapter, SIM card removal tool, cover, USB-C cable | Power adapter | |
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Compliant Standards | TUV Rheinland | - |