The Oppo F31 Pro+ and vivo V21 5G represent compelling options in the increasingly competitive mid-range 5G smartphone market. While both aim to deliver a balanced experience, they diverge significantly in their core hardware, particularly in chipset and charging technology. This comparison will dissect these differences to determine which device best suits your needs.
🏆 Quick Verdict
For the average user prioritizing performance and future-proofing, the Oppo F31 Pro+ is the clear winner. Its Snapdragon 7 Gen 3 chipset offers a substantial leap in processing power and efficiency over the vivo V21 5G’s Dimensity 800U, coupled with significantly faster 80W charging. While the V21 5G boasts comparable battery endurance, it lags behind in overall responsiveness.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 3, 5, 8, 19, 28, 38, 40, 41, 42, 48 | 1, 2, 3, 4, 5, 8, 34, 38, 40, 41 - India |
| 5G bands | 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA | 78 Sub6 - India |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE / 5G |
| Launch |
|---|
| Announced | 2025, September 16 | 2021, April 27 |
| Status | Available. Released 2025, September 16 | Available. Released 2021, May 06 |
| Body |
|---|
| Build | - | Glass front, plastic frame, plastic back |
| Dimensions | 163.1 x 77.6 x 7.7 mm or 7.9 mm | 159.7 x 73.9 x 7.3 mm (6.29 x 2.91 x 0.29 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 195 or 204 g (6.88 oz) | 176 g (6.21 oz) |
| Display |
|---|
| Protection | AGC DT-Star D+ | - |
| Resolution | 1280 x 2800 pixels, 19.5:9 ratio (~453 ppi density) | 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) |
| Size | 6.8 inches, 112.8 cm2 (~89.1% screen-to-body ratio) | 6.44 inches, 100.1 cm2 (~84.8% screen-to-body ratio) |
| Type | AMOLED, 1B colors, 120Hz, 1600 nits (HBM) | AMOLED, 90Hz, HDR10+, 500 nits (typ) |
| Platform |
|---|
| CPU | Octa-core (1x2.63 GHz Cortex-A715 & 3x2.4 GHz Cortex-A715 & 4x1.8 GHz Cortex-A510) | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) |
| Chipset | Qualcomm SM7550-AB Snapdragon 7 Gen 3 (4 nm) | Mediatek Dimensity 800U (7 nm) |
| GPU | Adreno 720 | Mali-G57 MC3 |
| OS | Android 15, ColorOS 15 | Android 11, Funtouch 11.1 |
| Memory |
|---|
| Card slot | No | microSDXC (uses shared SIM slot) |
| Internal | 256GB 8GB RAM, 256GB 12GB RAM | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM |
| | - | UFS 2.2 |
| Main Camera |
|---|
| Dual | 50 MP, f/1.8, (wide), PDAF, OIS
Auxiliary lens | - |
| Features | Color spectrum sensor, LED flash, HDR, panorama | LED flash, HDR, panorama |
| Single | - | 44 MP, f/2.0, (wide), AF, OIS |
| Triple | - | 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS
8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm
2 MP (macro) |
| Video | 4K@30fps, 1080p@30/60/120fps, gyro-EIS, OIS | 4K@30fps (no OIS), 1080p@30/60fps |
| Selfie camera |
|---|
| Features | Panorama | Dual-LED flash, HDR |
| Single | 32 MP, f/2.4, (wide) | 44 MP, f/2.0, (wide), AF, OIS |
| Video | 1080p@30fps, gyro-EIS | 4K@30fps (no OIS), 1080p@30fps |
| Sound |
|---|
| 3.5mm jack | - | No |
| 35mm jack | No | No |
| Loudspeaker | Yes, with stereo speakers | Yes |
| Comms |
|---|
| Bluetooth | 5.2, A2DP, LE, aptX HD | 5.1, A2DP, LE |
| Infrared port | Yes | - |
| NFC | No | Yes (market/region dependent) |
| Positioning | GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS | GPS, GLONASS, GALILEO, BDS |
| Radio | No | No |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Features |
|---|
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery |
|---|
| Charging | 80W wired, 13.5W PD, 44W UFCS, 33W PPS, 42% in 20 min
10W reverse wired | 33W wired, 63% in 30 min |
| Type | Si/C Li-Ion 7000 mAh | 4000 mAh |
| Misc |
|---|
| Colors | Festival Pink, Himalayan White, Gemstone Blue | Dusk Blue, Sunset Dazzle, Arctic White |
| Models | CPH2757 | V2050 |
| Price | About 320 EUR | About 190 EUR |
| SAR | 1.16 W/kg (head) 0.99 W/kg (body) | 1.05 W/kg (head) 0.87 W/kg (body) |
| Tests |
|---|
| Battery life | - |
Endurance rating 123h
|
| Camera | - |
Photo / Video |
| Display | - |
Contrast ratio: Infinite (nominal) |
| Loudspeaker | - |
-28.2 LUFS (Average)
|
| Performance | - |
AnTuTu: 336699 (v8), 365055 (v9)
GeekBench: 6516 (v4.4), 1600 (v5.1)
GFXBench: 17fps (ES 3.1 onscreen) |
Oppo F31 Pro+
- Significantly faster Snapdragon 7 Gen 3 chipset
- Ultra-fast 80W wired charging
- Supports multiple charging standards (PD, UFCS, PPS)
- Display specifications currently unknown
- Camera details are limited
vivo V21 5G
- Good battery endurance (123h rating)
- Respectable peak display brightness (761 nits)
- Solid all-around performance for everyday tasks
- Older Dimensity 800U chipset
- Slower 33W charging
Display Comparison
The vivo V21 5G’s display is rated at 761 nits of peak brightness, a respectable figure for outdoor visibility. However, the Oppo F31 Pro+’s display specifications are currently unavailable, making a direct brightness comparison impossible. Both devices claim an 'infinite' contrast ratio, a common marketing term. Without knowing the panel technology (AMOLED vs. LCD) or refresh rate of the F31 Pro+, it’s difficult to assess its overall display quality beyond brightness. The V21 5G’s display is adequate, but the F31 Pro+ could potentially offer a more vibrant and responsive experience depending on its panel.
Camera Comparison
Both devices feature photo and video capabilities, but detailed camera specifications are limited. Without knowing sensor sizes, aperture values, or image processing algorithms, a direct comparison is challenging. The absence of specific details suggests neither phone is positioned as a camera-centric flagship. The V21 5G likely relies on MediaTek’s Imagiq ISP, while the F31 Pro+ utilizes Qualcomm’s Spectra ISP. The F31 Pro+’s newer chipset may offer more advanced image processing features, but this remains speculative without further information. We can assume both phones will offer acceptable image quality in good lighting conditions, but low-light performance is likely to be a differentiating factor.
Performance
This is where the Oppo F31 Pro+ truly shines. Its Qualcomm Snapdragon 7 Gen 3 (4nm) chipset is a generation ahead of the vivo V21 5G’s MediaTek Dimensity 800U (7nm). The 4nm process node of the Snapdragon 7 Gen 3 translates to significantly improved power efficiency and thermal management, reducing the likelihood of performance throttling during sustained workloads. The Snapdragon’s CPU configuration – a 1x2.63 GHz Cortex-A715, 3x2.4 GHz Cortex-A715, and 4x1.8 GHz Cortex-A510 – is architecturally superior to the V21 5G’s 2x2.4 GHz Cortex-A76 and 6x2.0 GHz Cortex-A55. This means faster app launches, smoother multitasking, and a more enjoyable gaming experience on the F31 Pro+. The V21 5G’s Dimensity 800U is still capable, but it will struggle with more demanding tasks compared to the F31 Pro+.
Battery Life
The vivo V21 5G boasts an endurance rating of 123 hours, indicating solid battery life. However, the Oppo F31 Pro+ compensates for potentially lower battery capacity with its blazing-fast 80W wired charging. This allows for a 42% charge in just 20 minutes, significantly reducing downtime. The V21 5G’s 33W charging takes 30 minutes to reach 63%. The F31 Pro+ also supports PD, UFCS, and PPS charging standards, offering greater compatibility and flexibility. While the V21 5G’s endurance rating is commendable, the F31 Pro+’s charging speed is a game-changer for users who prioritize convenience.
Buying Guide
Buy the Oppo F31 Pro+ if you need a phone capable of handling demanding applications, enjoy fast charging, and want a device that will remain responsive for years to come. Buy the vivo V21 5G if you prioritize a consistently measured battery life rating and are less concerned with peak performance or the latest chipset technology. The V21 5G is a solid all-rounder, but the F31 Pro+ offers a more compelling upgrade path.
Frequently Asked Questions
❓ Will the Snapdragon 7 Gen 3 in the Oppo F31 Pro+ handle demanding games like Genshin Impact at high settings?
Yes, the Snapdragon 7 Gen 3 is a capable chipset for gaming. While it's not a flagship-level processor, it should comfortably run Genshin Impact at medium to high settings with stable frame rates. The 4nm process node also helps to minimize thermal throttling during extended gaming sessions.
❓ How long does it realistically take to fully charge the Oppo F31 Pro+ from 0% to 100% with the 80W charger?
While Oppo claims a 42% charge in 20 minutes, a full 0-100% charge with the 80W charger is estimated to take around 35-40 minutes. This is significantly faster than the vivo V21 5G’s 33W charging, which requires approximately 60-70 minutes for a full charge.
❓ Does the vivo V21 5G’s Dimensity 800U chipset struggle with multitasking or running multiple apps simultaneously?
The Dimensity 800U is adequate for moderate multitasking. However, users who frequently switch between numerous apps or run resource-intensive applications may experience some lag or slowdown. The Oppo F31 Pro+’s Snapdragon 7 Gen 3 offers a smoother multitasking experience due to its more powerful CPU and improved memory management.
