OnePlus 8T vs vivo V21 5G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 8T
OnePlus 8T
Oneplus

General

Launch Date October 16, 2020 May 6, 2021
Release Year 2020 2021

Physical

Volume 100.03 cm³ 86.15 cm³
Screen Size to Weight Ratio 3.48 "/g 3.66 "/g
Weight 188 g 176 g
Height 160.7 mm 159.7 mm
Width 74.1 mm 73.9 mm
Thickness 8.4 mm 7.3 mm
Foldable Design No No
Available Colors
  • Lunar Silver
  • Aquamarine Green
  • Cyberpunk 2077 Edition
  • Arctic White
  • Dusk Blue
  • Sunset Dazzle

Display

Screen Size 6.55 " 6.44 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87 % 84.8 %
Pixel Density 402 PPI 409 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 96.45 mAh/in²
Battery Density 44.99 mAh/cm³ 46.43 mAh/cm³
Battery Capacity 4500 mAh 4000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Mediatek Dimensity 800U (7 nm)
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 650 Mali-G57 MC3

Connectivity

USB Version 3.1 2.0
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.1, OTG USB Type-C 2.0, OTG

Software

Operating System Android Android
Initial OS Version 11 11
Maximum OS Version 14

Comparison Summary

1. Specifications Comparison

Design

FeatureOnePlus 8Tvivo V21 5GPractical Impact
Dimensions160.7 × 74.1 × 8.4 mm159.7 × 73.9 × 7.3 mmThe vivo V21 5G is noticeably thinner and slightly lighter, making it more comfortable for one-handed use and pocketable. The OnePlus 8T has a larger overall volume.
Weight188g176gThe vivo V21 5G is slightly lighter, which might be noticeable during extended use.
Build Quality (Screen Protection)Corning Gorilla Glass 5UnknownOnePlus 8T offers better screen protection against scratches and drops. If you are prone to dropping your phone, this is a big plus.

Display

FeatureOnePlus 8Tvivo V21 5GPractical Impact
Size6.55"6.44"The OnePlus 8T has a slightly larger screen, which can be better for media consumption and gaming.
Resolution1080x24001080x2400Both offer the same sharpness for everyday use.
Refresh Rate120Hz90HzThe OnePlus 8T's 120Hz display provides smoother scrolling and animations, enhancing the overall user experience, especially in gaming and fast-paced apps.
Brightness1100 nits0 nitsThe OnePlus 8T's higher brightness makes it much easier to view the screen outdoors in bright sunlight. The vivo V21 5G's brightness is unknown.
TechnologyAMOLEDAMOLEDBoth phones use AMOLED which means vibrant colors and deep blacks.

Performance

FeatureOnePlus 8Tvivo V21 5GPractical Impact
ChipsetQualcomm Snapdragon 865 5GMediatek Dimensity 800UThe Snapdragon 865 is significantly more powerful, resulting in faster app loading, smoother multitasking, and better gaming performance.
AnTuTu Score744,900343,150The OnePlus 8T's much higher score indicates superior overall performance.
GPUAdreno 650Mali-G57 MC3The Adreno 650 is a more powerful GPU, delivering better graphics performance for gaming and demanding applications.

Camera

FeatureOnePlus 8Tvivo V21 5GPractical Impact
Main Camera48MP, f/1.7, 1/2" Sony IMX58664MP, f/1.79The vivo V21 5G's higher megapixel count may result in slightly more detailed photos in good lighting. The OnePlus 8T's larger sensor size often helps in low light.
Selfie Camera16MP, f/2.4, 1/3.13" Sony IMX47144MP, f/2.0, 1/2.65" Samsung S5KGH1The vivo V21 5G has a significantly higher resolution front camera with a wider aperture and larger sensor, potentially leading to better selfies, especially in low light.
Wide Angle Lens16MP, f/2.28MP, f/2.2The OnePlus 8T's higher resolution wide-angle lens will capture more detail in wide shots.
Macro Lens5MP, f/2.42MP, f/2.4The OnePlus 8T's macro lens will capture more detailed close-up shots.
Black & White Lens2MP, f/2.4N/AThe OnePlus 8T has a dedicated black and white lens, which may provide more stylistic photography options.
Video RecordingUp to 4K@60fps with HDR, EISUp to 4K@30fps with OISOnePlus 8T offers 4K video at 60fps, the V21 5G uses OIS.

Battery

FeatureOnePlus 8Tvivo V21 5GPractical Impact
Capacity4500mAh4000mAhThe OnePlus 8T's larger battery will likely provide longer battery life, especially with heavy usage.
Charging65W Fast Charging33W Fast ChargingThe OnePlus 8T charges much faster, allowing you to quickly top up the battery.

Storage

FeatureOnePlus 8Tvivo V21 5GPractical Impact
RAM8GB or 12GB8GBThe OnePlus 8T offers a 12GB RAM option for smoother multitasking and more demanding apps.
Expandable StorageNoNoNeither phone allows for expandable storage, so choosing the right internal storage option is important.

2. Key Differences Analysis

OnePlus 8T Advantages:

  • Significantly Higher Performance: The Snapdragon 865 offers a much faster and smoother experience for gaming, multitasking, and demanding applications.
  • Brighter Display: Easier to see the screen in direct sunlight.
  • Faster Charging: 65W charging significantly reduces charging time.
  • Higher Refresh Rate: Smoother scrolling and animations.
  • Better Wi-Fi Support: Supports newer Wi-Fi standards for faster and more reliable connections.
  • More Feature-Rich Camera System: Includes a dedicated macro lens, a black & white lens and the ability to record 4k video at 60fps.
  • Stereo Speakers: Better audio experience for media consumption.

vivo V21 5G Advantages:

  • Lighter and Thinner Design: More comfortable to hold and carry.
  • Potentially Better Selfie Camera: Higher resolution and wider aperture may lead to better selfies, especially in low light, but this would need real-world testing to confirm.
  • OIS (Optical Image Stabilization) for Video: While only 4k 30fps, the OIS will offer a smoother video experience.

Significant Trade-offs:

  • Choosing the OnePlus 8T means sacrificing a slimmer and lighter design and potentially a less impressive selfie camera.
  • Choosing the vivo V21 5G means giving up a lot of performance, brightness, faster charging, and a smoother display.

3. User Profiles & Recommendations

OnePlus 8T Ideal User:

  • Gamers: The powerful processor and GPU, along with the high refresh rate display, provide a superior gaming experience.
  • Power Users: Those who need a phone that can handle heavy multitasking and demanding applications.
  • Outdoor Users: The brighter display ensures good visibility in sunlight.
  • Media Consumers: Stereo speakers enhance the viewing experience.
  • Users wanting better connectivity: Users who have Wi-Fi 6 will be able to take advantage of it.

Use Cases for OnePlus 8T:

  • Playing graphics-intensive games like Genshin Impact or Call of Duty Mobile.
  • Editing videos or photos on the go.
  • Using multiple apps simultaneously without lag.
  • Watching movies or videos outdoors in bright sunlight.

vivo V21 5G Ideal User:

  • Selfie Enthusiasts: Those who prioritize front camera quality for selfies and video calls.
  • Users who value a slim and lightweight design: Prioritizes comfort and portability.
  • Everyday Users: Someone who primarily uses their phone for basic tasks like browsing, social media, and communication.

Use Cases for vivo V21 5G:

  • Taking high-quality selfies and video calls.
  • Carrying a phone comfortably in a pocket or purse.
  • Basic social media use.

Price-to-Value Ratio:

Without knowing the current prices, it's hard to determine the exact price-to-value ratio. However, the OnePlus 8T generally offers more value for its performance and features, as long as it's priced reasonably close to the vivo V21 5G. If the OnePlus 8T is significantly more expensive, the value proposition becomes less clear.

4. Decision Framework

Key Questions for Buyers:

  1. How important is performance to you? If you play a lot of games or use demanding apps, the OnePlus 8T is the better choice.
  2. Do you prioritize a slim and lightweight design, or a larger battery and brighter display? The vivo V21 5G excels in design, while the OnePlus 8T offers better battery and display.
  3. How important are selfies? If the front camera is a top priority, the vivo V21 5G may be a better option, but it depends on real-world testing and preference.

Scenario-Based Recommendations:

  • Scenario 1: You are a mobile gamer who wants the best possible performance. Recommendation: OnePlus 8T
  • Scenario 2: You primarily take selfies and want a slim and lightweight phone. Recommendation: vivo V21 5G
  • Scenario 3: You want a phone for everyday use and want to save money. Recommendation: Compare current prices and choose the phone that offers the best value for your budget, considering that the OnePlus 8T is better for performance while the vivo V21 5G is better for selfies.

Personal Choice

If I had to choose between these two phones, I would pick the OnePlus 8T.

While I appreciate a sleek design, the performance difference is too significant to ignore. The Snapdragon 865 will provide a smoother, more responsive experience for years to come. Additionally, the brighter display and faster charging are significant advantages in daily use. While the selfie camera on the vivo V21 5G might be better, the overall package offered by the OnePlus 8T is more compelling for my needs, which involve a mix of gaming, productivity, and media consumption.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

Key Strengths:

  • Mobile technology analysis
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.