OnePlus 9 Pro (12GB RAM + 256GB) vs Vivo Y31 5G (6GB RAM + 128GB)
Quick Comparison
OnePlus 9 Pro (12GB RAM + 256GB) has better RAM than Vivo Y31 5G (6GB RAM + 128GB). In terms of display resolution, OnePlus 9 Pro (12GB RAM + 256GB) has better resolution of 3216 x 1440 than Vivo Y31 5G (6GB RAM + 128GB) which has resolution of 1608 x 720. OnePlus 9 Pro (12GB RAM + 256GB) has more internal memory than Vivo Y31 5G (6GB RAM + 128GB)
| Name | OnePlus 9 Pro (12GB RAM + 256GB) | Vivo Y31 5G (6GB RAM + 128GB) |
| RAM | 12 GB | 6 GB |
|---|---|---|
| Display | 6.7 in | 6.68 in |
| Internal Memory | 256 GB | 128 GB |
| Battery | 4500 mAh | 6500 mAh |
| Camera | 48 MP Quad | 50 MP |
| Price | Rs. 54999 | Rs. 21499 |
Related Products
Detailed Comparison
Price And Launch
The launch Date of the first phone is March 23, 2021. The cost of OnePlus 9 Pro (12GB RAM + 256GB) is Rs. 54999. The launch Date of the second phone is September 15, 2025. The cost of Vivo Y31 5G (6GB RAM + 128GB) is Rs. 21499.
Display comparison
Vivo Y31 5G (6GB RAM + 128GB) has screen size of 6.68 inches which falls short to OnePlus 9 Pro (12GB RAM + 256GB)'s 6.7 inch screen. OnePlus 9 Pro (12GB RAM + 256GB) has Screen type where as Vivo Y31 5G (6GB RAM + 128GB) has IPS Screen type. OnePlus's phone has display density of 525 PPI & Vivo's phone has only 264 PPI display density. In terms of screen to body ratio, OnePlus's phone has better screen to body ratio of ~ 90.8% than Vivo's phone ~ 84%. OnePlus 9 Pro (12GB RAM + 256GB) has 20.1:9 aspect ratio where as Vivo Y31 5G (6GB RAM + 128GB) has 20:9 aspect ratio.
Memory comparison
OnePlus 9 Pro (12GB RAM + 256GB)'s larger 12 GB RAM is better for playing games and all with respect to Vivo Y31 5G (6GB RAM + 128GB)'s lower 6 GB RAM. OnePlus 9 Pro (12GB RAM + 256GB) has more Internal Memory (256 GB) than Vivo Y31 5G (6GB RAM + 128GB) (128 GB).
Camera comparison
Vivo Y31 5G (6GB RAM + 128GB)'s 50 MP Rear Camera outshines OnePlus 9 Pro (12GB RAM + 256GB)'s 48 MP Quad Rear Camera in terms of resolution. OnePlus 9 Pro (12GB RAM + 256GB) will be better choice if you're looking to click lot of selfies as it has better 16 MP Front Camera in comparison to Vivo Y31 5G (6GB RAM + 128GB)'s 8 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 11 and the second one on 15 version.
Related Comparisons
Full Comparison
| Name | OnePlus 9 Pro (12GB RAM + 256GB) | Vivo Y31 5G (6GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | 9 Pro | Y31 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | March 23, 2021 | September 15, 2025 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Dimensions | 73.6 x 163.2 x 8.7 mm | 77 x 166.1 x 8.4 mm |
| Weight | 197 g | 209 g |
| Colors | Rose Red, Diamond Green | |
| Display | ||
| Type | Color Fluid AMOLED (16M Colors) | Color IPS Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.7 inches, 1440 x 3216 pixels, 120 Hz | 6.68 inches, 720 x 1608 pixels, 120 Hz |
| Aspect Ratio | 20.1:9 | 20:9 |
| PPI | ~ 525 PPI | ~ 264 PPI |
| Screen to Body Ratio | ~ 90.8% | ~ 84% |
| Glass Type | Corning Gorilla Glass 5 | Guardian Glass (ion-strengthened) |
| Brightness | 1000nts | |
| Features | Hyper Touch, Reading Mode, Night Mode, Vibrant Color Effect Pro, Motion Graphics Smoothing, Ultra-high Video Resolution, Adaptive Display, Curved Display | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Curved Display | Yes | |
| Memory | ||
| RAM | 12 GB | 6 GB |
| Expandable RAM | Upto 6 GB Extra Virtual RAM | |
| Storage | 256 GB | 128 GB |
| Storage Type | UFS 3.1 | eMMC 5.1 |
| Card Slot | No | Yes, (Hybrid Slot) |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.2, A2DP, LE, aptX HD | Yes, v4.2 |
| USB | Yes, USB-C v3.1 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | yes with A-GPS, Glonass, GLONASS, Beidou | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Electronic Compass, Gyroscope, Ambient Light Sensor, Proximity Sensor, Sensor Core, Flick-detect Sensor, Front RGB Sensor | Accelerometer, Proximity, Compass |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Water Resistance | Yes | Yes, 1.5 m upto 30 min |
| IP Rating | IP68 | IP68 |
| Dust Resistant | Yes | Yes |
| Extra Features | Alert Slider | |
| Camera | ||
| Rear Camera | 48 MP ƒ/1.8 (Wide Angle) 50 MP ƒ/2.2 (Ultra Wide) 8 MP ƒ/2.4 (Telephoto) Telephoto 2 MP ƒ/2.4 Monochrome | 50 MP ƒ/1.8 (Wide Angle) |
| Camera Sensor | Sony IMX789 | |
| OIS | Yes | |
| Auto Focus | Yes, Phase Detection autofocus | Yes |
| Features | Co-Developed by Hasselblad, Nightscape, Super Macro, UltraShot HDR, Smart Scene Recognition, Portrait mode, Pro mode, Panorama | Ring- panorama |
| Video Recording | 8K @ 30 fps UHD, 4K @ 120/30/60 fps UHD | 1080p @ 30 fps FHD |
| Flash | Yes, Dual LED | Yes, LED |
| Front Camera | 16 MP ƒ/2.4 Punch Hole, Autofocus, Screen Flash | 8 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v11, upgradable to v12 | Android v15 |
| Chipset | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 4 Gen2 |
| CPU | 2.84 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor |
| Core Details | 1x2.84 GHz Kryo 680 & 3x2.XX GHz Kryo 680 & 4x1.XX GHz Kryo 680 | 2x Performance Cores@2.2GHz & 6x Efficiency Cores@2GHz |
| GPU | Adreno 660 | Adreno 613 |
| Java | No | No |
| Browser | Yes, supports HTML5 | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, AAC+, WMA, AMR-NB, AMR-WB, WAV | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | MKV, MOV, MP4, H.265 | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | No | No |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 4500 mAh, Li-Po Battery | 6500 mAh |
| Fast Charging | Yes, 65W Fast Charging | Yes, 44W |
| Wireless Charging | Yes, 50W | |
| Reverse Charging | Yes | |