Oppo F31 5G has better RAM than Vivo S1. In terms of display resolution, Oppo F31 5G has better resolution of 2412 x 1080 than Vivo S1 which has resolution of 2340 x 1080. Both have the same amount of internal memory.
| Name | Oppo F31 5G | Vivo S1 |
| RAM | 8 GB | 4 GB |
|---|---|---|
| Display | 6.57 in | 6.38 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 7000 mAh | 4500 mAh |
| Camera | 50 MP + 2 MP Dual | 16 MP + 8 MP + 2 MP Triple |
| Price | Rs. 26999 | Rs. 8999 |
The launch Date of the first phone is September 15, 2025. The cost of Oppo F31 5G is Rs. 26999. The launch Date of the second phone is August 7, 2019. The cost of Vivo S1 is Rs. 8999.
Vivo S1 has screen size of 6.38 inches which falls short to Oppo F31 5G's 6.57 inch screen. Oppo F31 5G has AMOLED Screen type where as Vivo S1 has Super AMOLED Screen type. Vivo's phone has display density of 404 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 Vivo's phone ~ 83.3%. Oppo F31 5G has 20:9 aspect ratio where as Vivo S1 has 19.5:9 aspect ratio.
Oppo F31 5G's larger 8 GB RAM is better for playing games and all with respect to Vivo S1's lower 4 GB RAM. and both have same Internal Memory of 128 GB.
Oppo F31 5G's 50 MP + 2 MP Dual Rear Camera outshines Vivo S1's 16 MP + 8 MP + 2 MP Triple Rear Camera in terms of resolution. Vivo S1 will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to Oppo F31 5G's 16 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 15 and the second one on 9.0 version.
| Name | Oppo F31 5G | Vivo S1 |
| General | ||
| Country of Origin | India | |
| Model | CPH2781 | S1 |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | September 15, 2025 | August 7, 2019 |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | |
| Design | ||
| Dimensions | 75.2 x 159.5 x 8.1 mm | |
| Weight | 179 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 | 6.38 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 402 PPI | ~ 404 PPI |
| Screen to Body Ratio | ~ 92.2% | ~ 83.3% |
| Glass Type | AGC DT-Star D+ | |
| Features | Full HD+, Always-on display | |
| 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 | 128 GB |
| Storage Type | UFS 2.2 | |
| Card Slot | Yes, (Hybrid Slot) | Yes, upto 256 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, microUSB v2.0 |
| USB Features | USB on-the-go, USB Charging | USB on-the-go |
| 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, In Display |
| 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, Proximity, Compass, Gyroscope, Ambient Light Sensor |
| 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 | 16 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Depth Sensor) |
| Auto Focus | Yes | Yes |
| Features | HDR, Panorama | |
| Video Recording | 1080p @ 30 fps FHD, 720p | 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 | 32 MP ƒ/2 |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v9.0 (Pie) |
| Custom UI | ColorOS 15 | |
| Chipset | Mediatek Dimensity 6300 | Mediatek Helio P65 |
| CPU | 2.4 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55 |
| GPU | Arm Mali-G57 MC2 | Mali-G52 MC2 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | Yes |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 4500 mAh, Li-Po Battery |
| Fast Charging | Yes, 80W SUPERVOOC Charging | Yes, 18W Dual-Engine Fast Charging |
| Reverse Charging | Yes | |