OnePlus 9 Pro vs Xiaomi Redmi 12 5G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date March 30, 2021 August 4, 2023
Release Year 2021 2023

Physical

Volume 104.5 cm³ 105.49 cm³
Screen Size to Weight Ratio 3.4 "/g 3.41 "/g
Weight 197 g 199 g
Height 163.2 mm 168.6 mm
Width 73.6 mm 76.3 mm
Thickness 8.7 mm 8.2 mm
Foldable Design No No
Available Colors
  • Forest Green
  • Morning Mist
  • Stellar Black
  • Moonstone Silver
  • Jade Black
  • Pastel Blue

Display

Screen Size 6.7 " 6.79 "
Resolution 1440 x 3216 1080 x 2460
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 89.9 % 85.1 %
Pixel Density 525 PPI 396 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 550 nits
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 100.25 mAh/in² 108.45 mAh/in²
Battery Density 43.06 mAh/cm³ 47.4 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55 Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
GPU Adreno 660 Adreno 613

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

FeatureOnePlus 9 ProXiaomi Redmi 12 5GPractical Impact
Design
Dimensions163.2 × 73.6 × 8.7 mm168.6 × 76.3 × 8.2 mmRedmi 12 5G is taller and wider, might feel less comfortable in one hand for some. OnePlus 9 Pro is slightly thicker.
Weight197g199gVirtually the same weight, negligible difference in hand.
Display
Size6.7"6.79"Nearly identical screen size, negligible difference in viewing area.
Resolution1440x32161080x2460OnePlus 9 Pro offers sharper text and images, better for detailed content and VR.
Pixel Density (PPI)525396OnePlus 9 Pro provides a noticeably clearer and more detailed display, especially for close-up viewing.
TechnologyIPS LCDXiaomi Redmi 12 5G utilizes IPS LCD which offers good color reproduction and viewing angles. OnePlus 9 Pro's display technology is not provided but given the other specs it should be superior.
Refresh Rate120Hz90HzOnePlus 9 Pro provides smoother scrolling and animations, which is noticeable in daily use and gaming.
Brightness1300 nits0 nitsOnePlus 9 Pro is much more visible in bright sunlight, while Redmi 12 5G's brightness is not specified so it's not clear how it will perform outside
Performance
ChipsetQualcomm SM8350 Snapdragon 888 5G (5 nm)Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)OnePlus 9 Pro has significantly faster processing, better for demanding apps and multitasking.
AnTuTu Score877,600456,552OnePlus 9 Pro provides smoother and faster overall performance, while Xiaomi Redmi 12 5G is noticeably less powerful, suitable for basic use.
GPUAdreno 660Adreno 613OnePlus 9 Pro offers better graphics performance, resulting in smoother gameplay.
Camera
Main Camera48MP, f/1.8, 1/1.43" sensor, 1.12µm pixel size50MP, f/1.8Redmi 12 5G has slightly higher resolution, but OnePlus 9 Pro has a larger sensor and pixel size, indicating better low-light performance.
Selfie Camera16MP, f/2.4, 1/3.13" sensor, 0.70µm pixel size5MP, f/2.2OnePlus 9 Pro captures much more detailed selfies, with better light gathering due to higher resolution. Xiaomi Redmi 12 5G has slightly better aperture.
Telephoto Lens8MP, f/2.4, 1/4.4" sensor, 1.00µm pixel sizeNoneOnePlus 9 Pro can zoom without losing image quality, offering versatile photography options.
Wide Angle Lens50MP, f/2.2, 1/1.56" sensor, 1.00µm pixel sizeNoneOnePlus 9 Pro captures wider scenes, ideal for landscapes and group photos.
Portrait ModeNone2MP, f/2.4Xiaomi Redmi 12 5G has a dedicated depth sensor for portrait mode.
Black & White2MP, f/2.4NoneOnePlus 9 Pro can capture photos with a unique monochrome look
Video RecordingUp to 8K@30fps with HDR, EIS1080p@30fpsOnePlus 9 Pro captures much higher quality and more detailed video, suitable for professional use.
DxOMark ScoreMobile: 122Mobile: 63OnePlus 9 Pro performs significantly better in all camera tests, suitable for professional photography.
Battery
Capacity4500mAh5000mAhXiaomi Redmi 12 5G likely has a longer battery life, providing more time between charges.
Charging65W Fast Charging18W Fast ChargingOnePlus 9 Pro charges much faster, minimizing downtime.
Features50W Wireless Charging, Reverse ChargingNoneOnePlus 9 Pro can charge wirelessly and act as a wireless power bank.
Software
OSAndroid 11, upgradable to 14Android 13, upgradable to 14Xiaomi Redmi 12 5G has a newer OS out of the box, offering better security and features initially.
Connectivity
WiFiWiFi 6 (802.11ax)802.11acOnePlus 9 Pro has faster and more efficient WiFi, better for demanding data tasks.
Bluetooth5.25.0OnePlus 9 Pro features newer Bluetooth version, offering more efficient and stable connection, also supports more audio codecs like aptX, LDAC and SBC/AAC
GPSMore satellite systemsBasicOnePlus 9 Pro offers more precise location tracking.
Storage
Internal128GB/256GB128GB/256GBBoth have the same storage options.
RAM8GB/12GB4GB/6GB/8GBOnePlus 9 Pro offers more RAM, for seamless multitasking and running heavier apps.
ExpandableNoNoNeither phone allows for expandable storage, so you are limited to the built-in storage.
Audio
Audio QualityDolby Atmos, Stereo speakers, noise cancellation micBasic featuresOnePlus 9 Pro offers superior audio experience with spatial audio and clearer call quality.
Security
FeaturesBasic fingerprint sensorSide-mounted fingerprint sensorXiaomi Redmi 12 5G has a more convenient fingerprint scanner position.
Build Quality
Screen ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 3OnePlus 9 Pro has better screen protection from scratches and minor impacts.
Sensors
FeaturesComprehensive Sensor SuiteBasic SuiteOnePlus 9 Pro has a more comprehensive sensor package including gyroscope for better gaming and other applications.

2. Key Differences Analysis

OnePlus 9 Pro Advantages:

  • Superior Display: Higher resolution, pixel density, and brightness, offering a much better viewing experience, especially outdoors.
  • Significantly Higher Performance: Much faster processor and GPU, ideal for gaming, multitasking, and demanding applications.
  • Advanced Camera System: Higher-quality main, telephoto, and wide-angle lenses, enabling more versatile photography and videography. 8K video capture is ideal for professional use.
  • Faster Charging and Wireless Charging: 65W fast charging and 50W wireless charging, minimizing downtime.
  • Premium Audio Experience: Dolby Atmos, noise cancellation microphone, stereo speakers offer an immersive experience.
  • Better WiFi and Bluetooth: Offers faster and more efficient wireless connectivity.
  • More Comprehensive Sensor Suite: More sensors for better performance in gaming and other applications.

Xiaomi Redmi 12 5G Advantages:

  • Newer Operating System: Ships with Android 13 out of the box.
  • Slightly Larger Battery: 500mAh larger battery which can translate to a longer battery life.
  • Side-Mounted Fingerprint Sensor: Easier access than the basic fingerprint sensor in the OnePlus 9 Pro.
  • Lower Price: It's likely to be more affordable, given it's positioned as a budget-friendly device.

Significant Trade-offs:

  • OnePlus 9 Pro sacrifices battery life and price for a superior display, performance, and camera experience.
  • Xiaomi Redmi 12 5G sacrifices overall performance and camera quality to provide a lower price and slightly longer battery life.

3. User Profiles & Recommendations

OnePlus 9 Pro Ideal User:

  • Power User: Prefers maximum performance for gaming, multitasking, and demanding apps.
  • Photography Enthusiast: Values a high-quality camera system with versatile features, including 8K video recording and professional-grade photography features.
  • Multimedia Consumer: Needs a sharp, bright display for enjoying movies, videos, and games.
  • Tech Enthusiast: Appreciates faster charging speeds, wireless charging, and advanced connectivity options like Wi-Fi 6.
  • Professional: Professionals who will take advantage of video recording capabilities, enhanced audio and faster processing.

  • Specific Use Cases: Mobile gaming, professional photography/videography, video editing, frequent travel, resource-intensive productivity tasks.

Xiaomi Redmi 12 5G Ideal User:

  • Budget-Conscious User: Prioritizes affordability and essential smartphone features.
  • Basic User: Needs a reliable phone for calls, messaging, social media, and web browsing.
  • Casual User: Is not concerned with high-end gaming or advanced photography.
  • Long Battery Life Seeker: Appreciates a phone that can last throughout the day without frequent charging.

  • Specific Use Cases: Everyday communication, social media browsing, casual gaming, web browsing, basic photography needs.

4. Decision Framework

Key Questions for Buyers:

  1. Budget: How much are you willing to spend on a smartphone?
  2. Primary Use: What will be the main use for the smartphone (gaming, photography, everyday tasks)?
  3. Performance Needs: Do you require the fastest performance, or are you satisfied with average performance?

Scenario-Based Recommendations:

  • Scenario 1: Budget is Primary Concern: If the primary goal is to save money, the Xiaomi Redmi 12 5G offers a decent experience for basic tasks and has good battery life. The user is willing to sacrifice display, performance and camera quality.
  • Scenario 2: Performance is Essential: If high performance and a top-tier camera are crucial, then the OnePlus 9 Pro is the best option, though it comes at a higher cost.
  • Scenario 3: Well-Rounded Performance, some limitations: If the user wants a good experience in general use but is aware that the display will not be great and it's likely to underperform in gaming or video recording, Xiaomi Redmi 12 5G can be a suitable option.

What I Would Choose and Why

I would choose the OnePlus 9 Pro.

While the Xiaomi Redmi 12 5G offers a newer operating system and slightly larger battery, the OnePlus 9 Pro provides a superior overall experience that aligns with my priorities. Here's why:

  • Display Quality: The significantly better display on the OnePlus 9 Pro (higher resolution, pixel density, brightness, and refresh rate) enhances my daily interactions, whether it's browsing, watching videos, or playing games. This is a huge factor because I spend a lot of time looking at my phone screen.
  • Performance: The much more powerful processor and GPU mean I won't experience lag or stuttering, even with demanding apps or games. I often multitask, use resource-intensive applications, and play mobile games.
  • Camera Versatility: The advanced camera system with telephoto and wide-angle lenses and professional-grade video capture capabilities would allow me to take high quality photos and videos for my professional needs.
  • Faster Charging: The much faster charging allows me to quickly top-up the battery when I need to.

While the OnePlus 9 Pro is older and more expensive, the enhancements in display, performance and camera are worth it, as these factors would improve my daily use of the phone.

The Xiaomi Redmi 12 5G is a good budget option for those who need basic functionalities and a longer lasting battery, but it does not align with my needs for a high-performing and versatile device.

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.