OPPO F31 5G vs Samsung Galaxy M21
Quick Comparison
OPPO F31 5G has better RAM than Samsung Galaxy M21. In terms of display resolution, OPPO F31 5G has better resolution of 2412 x 1080 than Samsung Galaxy M21 which has resolution of 2340 x 1080. OPPO F31 5G has more internal memory than Samsung Galaxy M21
| Name | OPPO F31 5G | Samsung Galaxy M21 |
| RAM | 8 GB | 4 GB |
|---|---|---|
| Display | 6.57 in | 6.4 in |
| Internal Memory | 128 GB | 64 GB |
| Battery | 7000 mAh | 6000 mAh |
| Camera | 50 MP + 2 MP Dual | 48 MP + 8 MP + 5 MP Triple |
| Price | Rs. 35999 | Rs. 11999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is September 15, 2025. The cost of OPPO F31 5G is Rs. 35999. The launch Date of the second phone is March 18, 2020. The cost of Samsung Galaxy M21 is Rs. 11999.
Display comparison
OPPO F31 5G has larger screen size of 6.57 inches in comparison to Samsung Galaxy M21's 6.4 inch screen. OPPO F31 5G has AMOLED Screen type where as Samsung Galaxy M21 has Super AMOLED Screen type. Samsung's phone has display density of 403 PPI & OPPO's phone has only 402 PPI display density. In terms of screen to body ratio, OPPO's phone has better screen to body ratio of ~ 92.2% than Samsung's phone ~ 84.2%. OPPO F31 5G has 20:9 aspect ratio where as Samsung Galaxy M21 has 19.5:9 aspect ratio.
Memory comparison
OPPO F31 5G's larger 8 GB RAM is better for playing games and all with respect to Samsung Galaxy M21's lower 4 GB RAM. OPPO F31 5G has more Internal Memory (128 GB) than Samsung Galaxy M21 (64 GB).
Camera comparison
OPPO F31 5G's 50 MP + 2 MP Dual Rear Camera outclasses Samsung Galaxy M21's 48 MP + 8 MP + 5 MP Triple Rear Camera in terms of resolution. Samsung Galaxy M21 will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to OPPO F31 5G's 16 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 15 and the second one on 10.0 version.
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Full Comparison
| Name | OPPO F31 5G | Samsung Galaxy M21 |
| General | ||
| Country of Origin | India | |
| Model | CPH2781 | Galaxy M21 |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | September 15, 2025 | March 18, 2020 |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | |
| Design | ||
| Dimensions | 75.1 x 159 x 8.9 mm | |
| Weight | 188 g | |
| Display | ||
| Type | Color AMOLED Screen (16M Colors) | Color Super AMOLED Screen (16M Colors) |
| Touch | Yes, 360 Hz Touch Sampling Rate | Yes |
| Size | 6.57 inches, 1080 x 2412 pixels, 120 Hz | 6.4 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 402 PPI | ~ 403 PPI |
| Screen to Body Ratio | ~ 92.2% | ~ 84.2% |
| Glass Type | AGC DT-Star D+ | Corning Gorilla Glass 3 |
| Features | 420 nits (peak) | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 8 GB | 4 GB |
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 128 GB | 64 GB |
| Storage Type | UFS 2.2 | |
| Card Slot | Yes, (Hybrid Slot) | Yes, upto 512 GB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | n1/n3/n5/n7/n8/n20/n28A/n28B/n66/n38/n40/n41/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | 802.11 a/b/g/n/ac, Wi-Fi 5 (802.11 ac), 802.11 a/b/g/n, WLAN (2.4 GHz | 5 GHz), WLAN Display, WLAN Tethering, 1 x 1 SOSO | |
| Bluetooth | Yes, v5.4, Support SBC, AAC, aptX, aptX HD, LDAC, LHDC | Yes, v5.0 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Fingerprint Sensor | Yes, Side | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Induction, Ambient Light Induction, Proximity Sensor, Acceleration Sensor, Gravity Sensor, Gyroscope, Infrared Sensor, Step Recording Function, Facial Recognition Sensor | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Proximity Sensor, Virtual Light Sensing |
| 3.5mm Headphone Jack | No | Yes |
| AI Features | Smart Document (AI summaries, translations, rewriting), Smart Note (AI-enhanced note-taking), and high-quality scanning. Integrated Google Gemini delivers multimodal AI intelligence | |
| Water Resistance | Yes | |
| IP Rating | IP69+IP68+IP66 | |
| Dust Resistant | Yes | |
| Extra Features | 4300 mm² VC cooling system | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) Sensor: OV50D40, Sensor size: 1/2.88″, Single pixel size: 0.612 um, Aperture size: f/1.8, Focal length: 27 mm, Lens configuration: 5P, Supporting AF 2 MP Sensor: GC02M1-C24YK, Sensor size: 1/5″, Single pixel size: 1.75 um, Aperture size: f/2.4, Focal length: 22 mm, Lens configuration: 3P | 48 MP ƒ/2 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.2 (Depth Sensor) |
| Auto Focus | Yes | Yes |
| Features | Panorama, HDR | |
| Video Recording | 1080p @ 30 fps FHD, 720p | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 16 MP (Wide Angle) Sensor size: 1/3.09″, Single pixel size: 1.0 um, Aperture size: f/2.4, Focal length: 23 mm, Lens configuration: 4P Punch Hole | 20 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Front Camera Features | Photo, Video, Pro, Pano, Portrait, Night, Timelapse, Retouch, Sticker, Screen Flash | HDR |
| Technical | ||
| OS | Android v15 | Android v10.0, upgradable to v11 |
| Custom UI | ColorOS 15 | |
| Chipset | Mediatek Dimensity 6300 | Samsung Exynos 9611 |
| CPU | 2.4 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 |
| GPU | Arm Mali-G57 MC2 | Mali-G72 MP3 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA |
| Video | Yes | MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM |
| FM Radio | No | Yes |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 6000 mAh, Li-Po Battery |
| Fast Charging | Yes, 80W SUPERVOOC Charging | Yes, 15W Fast Charging |
| Reverse Charging | Yes | |