OPPO F21 Pro 4G vs Vivo Y31 5G (6GB RAM + 128GB)
Quick Comparison
OPPO F21 Pro 4G has better RAM than Vivo Y31 5G (6GB RAM + 128GB). In terms of display resolution, OPPO F21 Pro 4G has better resolution of 2400 x 1080 than Vivo Y31 5G (6GB RAM + 128GB) which has resolution of 1608 x 720. Both have the same amount of internal memory.
| Name | OPPO F21 Pro 4G | Vivo Y31 5G (6GB RAM + 128GB) |
| RAM | 8 GB | 6 GB |
|---|---|---|
| Display | 6.5 in | 6.68 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 4500 mAh | 6500 mAh |
| Camera | 64 MP + 2 MP + 2 MP Triple | 50 MP |
| Price | Rs. 21499 | Rs. 19999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is April 12, 2022. The cost of OPPO F21 Pro 4G is Rs. 21499. The launch Date of the second phone is September 15, 2025. The cost of Vivo Y31 5G (6GB RAM + 128GB) is Rs. 19999.
Display comparison
Vivo Y31 5G (6GB RAM + 128GB) has larger screen size of 6.68 inches in comparison to OPPO F21 Pro 4G's 6.5 inch screen. OPPO F21 Pro 4G has AMOLED Screen type where as Vivo Y31 5G (6GB RAM + 128GB) has IPS Screen type. OPPO's phone has display density of 409 PPI & Vivo's phone has only 264 PPI display density. In terms of screen to body ratio, OPPO's phone has better screen to body ratio of ~ 90.8% than Vivo's phone ~ 84%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
OPPO F21 Pro 4G's larger 8 GB RAM is better for playing games and all with respect to Vivo Y31 5G (6GB RAM + 128GB)'s lower 6 GB RAM. and both have same Internal Memory of 128 GB.
Camera comparison
OPPO F21 Pro 4G's 64 MP + 2 MP + 2 MP Triple Rear Camera outclasses Vivo Y31 5G (6GB RAM + 128GB)'s 50 MP Rear Camera in terms of resolution. OPPO F21 Pro 4G will be better choice if you're looking to click lot of selfies as it has better 32 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 12 and the second one on 15 version.
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Full Comparison
| Name | OPPO F21 Pro 4G | Vivo Y31 5G (6GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | F21 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 | April 12, 2022 | September 15, 2025 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Dimensions | 73.2 x 159.9 x 7.5 mm | 77 x 166.1 x 8.4 mm |
| Weight | 175 g | 209 g |
| Colors | Rose Red, Diamond Green | |
| Display | ||
| Type | Color AMOLED Screen (16.7M) | Color IPS Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.5 inches, 1080 x 2400 pixels, 90 Hz | 6.68 inches, 720 x 1608 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 409 PPI | ~ 264 PPI |
| Screen to Body Ratio | ~ 90.8% | ~ 84% |
| Glass Type | Corning Gorilla Glass 5 | Guardian Glass (ion-strengthened) |
| Brightness | 1000nts | |
| Features | Normal mode: 430 nits (Typical), High Brightness Mode: 600 nits (Typical), Vivid mode: 97% NTSC/95% DCI-P3, Gentle Mode: sRGB | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 8 GB | 6 GB |
| Expandable RAM | Upto 5 GB Extra Virtual RAM | Upto 6 GB Extra Virtual RAM |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS 2.2 | eMMC 5.1 |
| Card Slot | Yes, upto 256 GB | Yes, (Hybrid Slot) |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | No | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.1 | Yes, v4.2 |
| USB | Yes, USB-C | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | Built-in GPS, A-GPS, BeiDou, GLONASS, Galileo, QZSS | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, In Display | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Optical Sensor, Accelerometer, Gravity Sensor, Gyroscope, Pedometer, Compass | Accelerometer, Proximity, Compass |
| 3.5mm Headphone Jack | Yes | No |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| IP Rating | IP68/IP69 | |
| Dust Resistant | Yes | |
| Camera | ||
| Rear Camera | 64 MP ƒ/1.7 (Wide Angle) 2 MP ƒ/3.3 Microscope 2 MP ƒ/2.4 Mono | 50 MP ƒ/1.8 (Wide Angle) |
| Auto Focus | Yes | Yes |
| Features | Panorama, Portrait, Time-lapse, Slow-motion, Text scanner, Google Lens, Extra HD, Macro, Sticker | Ring- panorama |
| Video Recording | 1080p, 720p | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 32 MP ƒ/2.4 Punch Hole | 8 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v12 | Android v15 |
| Chipset | Qualcomm Snapdragon 680 | Qualcomm Snapdragon 4 Gen2 |
| CPU | 2.4 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor |
| Core Details | 4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver | 2x Performance Cores@2.2GHz & 6x Efficiency Cores@2GHz |
| GPU | Adreno 610 | Adreno 613 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | Yes | 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, 33W Fast Charging | Yes, 44W |