OnePlus 8 vs OnePlus 9 Pro - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 8
OnePlus 8
Oneplus
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date April 21, 2020 March 30, 2021
Release Year 2020 2021

Physical

Volume 93.43 cm³ 104.5 cm³
Screen Size to Weight Ratio 3.64 "/g 3.4 "/g
Weight 180 g 197 g
Height 160.2 mm 163.2 mm
Width 72.9 mm 73.6 mm
Thickness 8 mm 8.7 mm
Foldable Design No No
Available Colors
  • Glacial Green
  • Onyx Black
  • Interstellar Glow
  • Polar Silver
  • Forest Green
  • Morning Mist
  • Stellar Black

Display

Screen Size 6.55 " 6.7 "
Resolution 1080 x 2400 1440 x 3216
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.7 % 89.9 %
Pixel Density 402 PPI 525 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1300 nits

Hardware

Battery Capacity per Screen Area 100.23 mAh/in² 100.25 mAh/in²
Battery Density 46.02 mAh/cm³ 43.06 mAh/cm³
Battery Capacity 4300 mAh 4500 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
GPU Adreno 650 Adreno 660

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13 14

Comparison Summary

Specifications Comparison

FeatureOnePlus 8OnePlus 9 ProPractical Impact
Design
Dimensions160.2 x 72.9 x 8 mm, 180g163.2 x 73.6 x 8.7 mm, 197gThe OnePlus 8 is noticeably lighter and slightly smaller, making it more pocketable and comfortable for one-handed use. The 9 Pro is larger and heavier.
BuildGorilla Glass 5Gorilla Glass 5Both offer similar scratch resistance.
Display
Size6.55"6.7"The OnePlus 9 Pro offers a slightly larger screen for more immersive media consumption.
Resolution1080x2400 (402 ppi)1440x3216 (525 ppi)The 9 Pro's significantly higher resolution results in much sharper text and images.
Refresh Rate90Hz120HzThe 9 Pro's 120Hz refresh rate provides smoother scrolling and animations, noticeable in everyday use and gaming.
TechnologyAMOLEDAMOLED (missing in provided data, but confirmed based on knowledge)Both offer vibrant colors and deep blacks thanks to AMOLED technology.
Brightness1100 nits1300 nitsThe 9 Pro's higher brightness ensures better visibility in direct sunlight.
Performance
ChipsetSnapdragon 865Snapdragon 888The 9 Pro's Snapdragon 888 offers a noticeable performance boost, beneficial for demanding tasks and gaming.
RAM8GB/12GB8GB/12GBBoth offer ample RAM for multitasking.
Storage128GB/256GB128GB/256GBStorage options are identical. Neither has expandable storage.
Camera
Main Camera48MP, f/1.75, Sony IMX58648MP, f/1.8, Sony IMX789The 9 Pro boasts a larger sensor size (1/1.43" vs 1/2") on its main camera, potentially capturing more light and detail, especially in low-light conditions.
Ultrawide16MP, f/2.250MP, f/2.2, Sony IMX766The 9 Pro's ultrawide camera offers a much higher resolution and a larger sensor, leading to significantly improved image quality.
TelephotoNone8MP, f/2.4The 9 Pro includes a dedicated telephoto lens for optical zoom, absent in the OnePlus 8.
Battery
Capacity4300 mAh4500 mAhThe 9 Pro has a slightly larger battery, potentially translating to longer battery life.
Charging30W wired65W wired, 50W wirelessThe 9 Pro charges significantly faster both wired and wirelessly. Wireless charging is a major advantage.

Key Differences Analysis

OnePlus 8 Advantages:

  • Lighter and More Compact: Noticeably more comfortable for extended use and one-handed operation.
  • Potentially More Affordable: Likely to be priced lower than the 9 Pro.

OnePlus 9 Pro Advantages:

  • Superior Performance: The Snapdragon 888 and faster refresh rate provide a smoother and more responsive experience.
  • Significantly Better Camera System: Larger sensors, higher resolution ultrawide, dedicated telephoto lens, and improved image processing lead to superior image quality.
  • Faster Charging: Significantly faster wired and wireless charging provides more convenience.
  • Brighter Display: Better visibility outdoors.

User Profiles & Recommendations

OnePlus 8: Budget-conscious users prioritizing a lightweight and compact phone for everyday tasks, web browsing, and casual media consumption.

OnePlus 9 Pro: Users who demand top-tier performance, a cutting-edge camera system, a premium display, and fast charging capabilities. Ideal for mobile gamers, photography enthusiasts, and power users.

Decision Framework

  1. What is your budget? The OnePlus 8 offers excellent value if price is a major concern.
  2. Are camera quality and performance priorities? If so, the OnePlus 9 Pro is the clear winner.
  3. Do you value a lightweight and compact phone? The OnePlus 8 excels in this area.

My Choice: OnePlus 9 Pro

While the OnePlus 8 offers a compelling combination of features and affordability, the OnePlus 9 Pro is the superior device overall. The significantly improved camera system, faster performance, brighter display, and blazing-fast charging outweigh the slight increase in size and weight. The addition of wireless charging is a significant convenience. While the price difference might be a factor, the 9 Pro offers a more future-proof and premium experience justifying the higher cost for me. The jump in camera quality alone is a compelling reason for my choice, as I frequently use my phone for photography.

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.

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Bridging technical complexity with engaging, accessible narratives.