vivo NEX 3S 5G vs OnePlus 8 Pro: A Detailed Comparison of 2020 Flagships

Both the vivo NEX 3S 5G and the OnePlus 8 Pro represented the pinnacle of Android smartphone technology in 2020, powered by the Snapdragon 865 5G. However, they approached the flagship experience with different philosophies. The NEX 3S focused on a waterfall display and rapid charging, while the OnePlus 8 Pro prioritized a versatile camera system and refined software experience. This comparison dissects their strengths and weaknesses to determine which device offers the best value today.
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🏆 Quick Verdict

For the average user, the OnePlus 8 Pro emerges as the more well-rounded choice. While both phones share the same Snapdragon 865 chipset, the OnePlus 8 Pro’s superior battery endurance, more versatile camera system, and wider availability make it the more practical and reliable flagship.

PHONES
Phone Names vivo NEX 3S 5G OnePlus 8 Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 20, 25, 28, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 46, 66 - EU
5G bands1, 3, 41, 77, 78, 79 SA/NSA1, 3, 7, 28, 78 SA/NSA - EU
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps, 5G 7.5 Gbps DL
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / LTE / 5G
 CDMA2000 1xEV-DO 78 SA/NSA - IN
Launch
Announced2020, March 10. Released 2020, March 142020, April 14
StatusDiscontinuedAvailable. Released 2020, April 21
Body
BuildGlass front, glass back, aluminum frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions167.4 x 76.1 x 9.4 mm (6.59 x 3.00 x 0.37 in)165.3 x 74.4 x 8.5 mm (6.51 x 2.93 x 0.33 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight219.5 g (7.76 oz)199 g (7.02 oz)
 -IP68 dust/water resistant
Display
Protection-Corning Gorilla Glass 5
Resolution1080 x 2256 pixels (~363 ppi density)1440 x 3168 pixels (~513 ppi density)
Size6.89 inches, 119.3 cm2 (~93.6% screen-to-body ratio)6.78 inches, 111.7 cm2 (~90.8% screen-to-body ratio)
TypeSuper AMOLED, HDR10+Fluid AMOLED, 1B colors, 120Hz, HDR10+
Platform
CPUOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)
ChipsetQualcomm SM8250 Snapdragon 865 5G (7 nm+)Qualcomm SM8250 Snapdragon 865 5G (7 nm+)
GPUAdreno 650Adreno 650
OSAndroid 10, Funtouch 10.0Android 10, upgradable to Android 13, OxygenOS 13
Memory
Card slotNoNo
Internal256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 12GB RAM
 UFS 3.1UFS 3.0
Main Camera
FeaturesLED flash, HDR, panoramaLaser AF, Dual-LED flash, HDR, panorama
Quad-48 MP, f/1.8, 25mm (wide), 1/1.43", 1.12µm, multi-directional PDAF, OIS 8 MP, f/2.4, (telephoto), 1/1.0µm, PDAF, OIS, 3x optical zoom 48 MP, f/2.2, 14mm, 116˚ (ultrawide), 1/2.0", 0.8µm, PDAF 5 MP, f/2.4, (Color filter camera)
Triple64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 13 MP, f/2.5, 52mm (telephoto), PDAF, 2x optical zoom 13 MP, f/2.2, 13mm (ultrawide), PDAF-
Video4K@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS4K@30/60fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
Selfie camera
FeaturesLED flash, HDRHDR
SingleMotorized pop-up 16 MP, f/2.1, 26mm (wide), 1/3.06", 1.0µm16 MP, f/2.5, (wide), 1/3.06", 1.0µm
Video1080p@30fps1080p@30fps, gyro-EIS
Sound
3.5mm jack YesNo
35mm jackYesNo
Loudspeaker YesYes, with stereo speakers
 32-bit/192kHz audio -
Comms
Bluetooth5.1, A2DP, LE, aptX HD5.1, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS, GLONASS, GALILEO, BDSGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
RadioNoNo
USBUSB Type-C 2.0, OTGUSB Type-C 3.1, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNA
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging44W wired30W wired, 50% in 23 min 30W wireless, 50% in 30 min 3W reverse wireless
Type4500 mAhLi-Po 4510 mAh, non-removable
Misc
ColorsBlack, Blue, OrangeGlacial Green, Ultramarine Blue, Onyx Black
ModelsV1950AIN2023, IN2020, IN2021, IN2025
PriceAbout 630 EURAbout 310 EUR
Pricing
128GB 8GB RAM-$ 428.39
256GB 12GB RAM-$ 853.51
RENEWED-$ 486.00
Tests
Battery life- Endurance rating 103h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -23.5 LUFS (Very good)
Performance- AnTuTu: 573276 (v8) GeekBench: 3374 (v5.1) GFXBench: 24fps (ES 3.1 onscreen)

vivo NEX 3S 5G

  • Waterfall display offers an immersive visual experience.
  • 44W wired charging is exceptionally fast.
  • Unique and eye-catching design.

  • Potentially limited availability.
  • Battery life likely inferior to OnePlus 8 Pro.
  • Camera system less versatile than OnePlus 8 Pro.

OnePlus 8 Pro

  • Excellent battery life (103h endurance rating).
  • Versatile camera system with ultrawide and telephoto lenses.
  • Fast wired and wireless charging options.

  • Less visually striking display compared to NEX 3S 5G.
  • Software can be divisive for some users.
  • Price point higher than some competitors at launch.

Display Comparison

Both the vivo NEX 3S 5G and OnePlus 8 Pro boast displays with an 'Infinite' (nominal) contrast ratio, indicating excellent black levels. However, the NEX 3S 5G’s defining feature is its waterfall display, offering a more immersive visual experience, though potentially prone to accidental touches. The OnePlus 8 Pro, while lacking the extreme curvature, benefits from a 120Hz refresh rate (not specified for the NEX 3S 5G), resulting in smoother scrolling and animations. This higher refresh rate, combined with likely superior color calibration, gives the OnePlus 8 Pro an edge for media consumption and gaming.

Camera Comparison

The OnePlus 8 Pro’s camera system is significantly more versatile. While both phones feature capable cameras, the OnePlus 8 Pro’s inclusion of an ultrawide lens with a large sensor and a dedicated telephoto lens provides greater flexibility in shooting scenarios. The NEX 3S 5G’s camera capabilities are less detailed in the provided data, but it’s reasonable to assume it focuses on a primary and ultrawide setup. The OnePlus 8 Pro’s image processing, known for its natural color reproduction and dynamic range, further enhances its photographic capabilities. The NEX 3S 5G’s camera is likely competent, but lacks the breadth of features and refinement of the OnePlus 8 Pro.

Performance

Both devices are equipped with the Qualcomm SM8250 Snapdragon 865 5G (7 nm+), featuring an identical CPU configuration: an octa-core setup with 1x2.84 GHz Cortex-A77, 3x2.42 GHz Cortex-A77, and 4x1.80 GHz Cortex-A55 cores. Therefore, raw processing power is virtually identical. The performance difference will likely come down to thermal management and RAM speed. While both likely utilize LPDDR5 RAM, OnePlus’s reputation for optimized software and cooling solutions suggests it may sustain peak performance for longer periods during demanding tasks like prolonged gaming sessions.

Battery Life

The OnePlus 8 Pro holds a clear advantage in battery endurance, boasting a 103-hour endurance rating. While the NEX 3S 5G’s battery capacity isn’t specified, the OnePlus 8 Pro’s rating suggests a larger battery and/or more efficient power management. The NEX 3S 5G compensates with 44W wired charging, faster than the OnePlus 8 Pro’s 30W wired charging (50% in 23 minutes). However, the OnePlus 8 Pro offers the convenience of 30W wireless charging (50% in 30 minutes) and 3W reverse wireless charging, features absent on the NEX 3S 5G. The OnePlus 8 Pro’s combination of longevity and versatile charging options makes it the more practical choice.

Buying Guide

Buy the vivo NEX 3S 5G if you prioritize a truly immersive, nearly bezel-less display and the fastest possible wired charging speeds. This phone is for users who want a statement piece and don't mind potentially limited availability. Buy the OnePlus 8 Pro if you value a consistently excellent camera experience, long-lasting battery life, and a polished software experience with guaranteed updates. It’s the better choice for power users and those seeking a dependable daily driver.

Frequently Asked Questions

❓ Does the OnePlus 8 Pro's 120Hz display significantly impact battery life?
While the 120Hz refresh rate does consume more power than a standard 60Hz display, the OnePlus 8 Pro’s large battery and efficient power management mitigate this impact. Users can also switch to a 60Hz mode to conserve battery life when needed, offering a balance between visual smoothness and longevity.
❓ Is the 44W charging on the vivo NEX 3S 5G truly faster in real-world use than the OnePlus 8 Pro's 30W charging?
While 44W is numerically higher, the difference in charging speed isn't as dramatic as it appears. The OnePlus 8 Pro’s 30W charging still achieves 50% charge in 23 minutes, and the NEX 3S 5G’s overall charging curve may not consistently outperform it. The convenience of wireless charging on the OnePlus 8 Pro also adds to its overall charging versatility.
❓ How does the OnePlus 8 Pro handle sustained gaming sessions?
The OnePlus 8 Pro benefits from a well-optimized cooling system and software that effectively manages thermal throttling. While the Snapdragon 865 can generate heat under prolonged load, the OnePlus 8 Pro is generally capable of maintaining high frame rates for extended gaming sessions without significant performance drops.