OnePlus 9 vs Xiaomi Redmi Note 12 4G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus

General

Launch Date March 26, 2021 March 30, 2023
Release Year 2021 2023

Physical

Volume 103.29 cm³ 99.49 cm³
Screen Size to Weight Ratio 3.41 "/g 3.63 "/g
Weight 192 g 183.5 g
Height 160 mm 165.7 mm
Width 74.2 mm 76 mm
Thickness 8.7 mm 7.9 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Ice Blue
  • Mint Green
  • Onyx Gray

Display

Screen Size 6.55 " 6.67 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.2 % 85.3 %
Pixel Density 402 PPI 395 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 450 nits
HBM Brightness N/A 700 nits
Peak Brightness 1100 nits 1200 nits

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 112.39 mAh/in²
Battery Density 43.57 mAh/cm³ 50.26 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM6225 Snapdragon 685 (6 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (4x2.8 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53)
GPU Adreno 660 Adreno 610

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 13
Maximum OS Version 13 14

Comparison Summary

Smartphone Comparison: OnePlus 9 vs. Xiaomi Redmi Note 12 4G

1. Specifications Comparison

FeatureOnePlus 9Xiaomi Redmi Note 12 4GPractical Impact
Design
Launch Date2021-03-262023-03-30Xiaomi Redmi Note 12 4G is a newer device, potentially benefiting from more recent tech and software.
Dimensions160 × 74.2 × 8.7 mm165.7 × 76 × 7.9 mmXiaomi is taller and wider, OnePlus is thicker. May affect pocketability and one-handed use.
Weight192g183.5gXiaomi is slightly lighter, potentially more comfortable for extended use.
Display
Size6.55"6.67"Xiaomi has a slightly larger screen, better for media consumption.
Resolution1080x24001080x2400Both offer the same sharpness, no practical difference.
PPI402395Similar pixel density, both appear sharp to the human eye.
TechnologyAMOLEDAMOLEDBoth provide vibrant colors and deep blacks, similar viewing experience.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations, similar visual fluidity.
Brightness1100 nits1200 nitsXiaomi offers slightly better outdoor visibility in bright sunlight.
Performance
ChipsetSnapdragon 888 5G (5 nm)Snapdragon 685 (6 nm)OnePlus has a much more powerful processor, better for gaming and demanding tasks.
AnTuTu Score880,900338,900OnePlus offers significantly superior performance for demanding apps and games.
GPUAdreno 660Adreno 610OnePlus has a much more powerful GPU, offering better graphics performance for gaming.
Battery
Capacity4500mAh5000mAhXiaomi has a larger battery, likely providing better battery life.
Charging65W fast charging33W fast chargingOnePlus charges much faster, quickly replenishing the battery.
Features15W Wireless ChargingReverse ChargingOnePlus offers wireless charging, Xiaomi can charge other devices.
Camera
Rear Main Sensor48MP, f/1.79, 1/1.4", Sony IMX68950MP, f/1.8, 1/2.76", Samsung S5KJN1OnePlus sensor is larger with wider aperture, better low-light performance.
Selfie Camera16MP, f/2.4, 1/3.13", Sony IMX47113MP, f/2.45, UnknownOnePlus has a slightly higher resolution sensor.
Wide Angle Lens50MP, f/2.2, 1/1.56", Sony IMX7668MP, f/2.2, 1/4", Omnivision OV08D10OnePlus wide angle sensor is much larger with a higher resolution, significantly better image quality.
Macro LensN/A2MP, f/2.4, UnknownXiaomi offers a dedicated macro lens, OnePlus lacks this feature.
Black & White2MP, f/2.4, UnknownN/AOnePlus offers a dedicated black and white lens, Xiaomi lacks this feature.
VideoUp to 8K@30fps1080p@30fpsOnePlus offers much higher video resolution, better for high-quality content creation.
DxoMarkNot testedMain 63, Photo 54, Video 66Only Xiaomi Redmi Note 12 4G has been tested, providing some performance context.
Features4K/8K Video, PDAF, CDAF, RAW 12 bits, Night ModeBasic Camera FeaturesOnePlus has a more advanced camera feature set that allows for more flexibility in photography and videography.
Software
OSAndroid 11, up to 13Android 13, up to 14Xiaomi has a more recent Android version with longer software support.
Connectivity
WiFiWiFi 6, MIMOWiFi 5OnePlus offers faster WiFi speeds and better performance in crowded networks.
Bluetooth5.2, aptX, LDAC, AAC5.0, EDR, HIDOnePlus has a newer Bluetooth version, better for audio.
GPSDual-band GPS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, GalileoOnePlus offers more accurate location tracking.
Storage
Internal128/256 GB64/128/256 GBBoth offer similar storage options, Xiaomi has 64GB option.
RAM8/12 GB4/6/8 GBOnePlus provides more RAM, better for heavy multitasking and demanding applications.
ExpandableNoNoNeither phone offers expandable storage via microSD.
Audio
QualityDolby Atmos, Noise cancellation, Stereo Speakers, 3 microphonesBasic audio featuresOnePlus offers a much more immersive experience thanks to its premium audio features.
Security
FeaturesBasic fingerprint sensorSide-mounted fingerprint sensorXiaomi has a more advanced fingerprint sensor.
Build Quality
ProtectionGorilla Glass 5Gorilla Glass 3OnePlus offers a more durable screen with better scratch resistance.

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Significantly Superior Performance: The Snapdragon 888 chipset provides much faster processing speeds, making the phone ideal for gaming and demanding applications.
  • Advanced Camera System: Larger sensors, wider apertures, and higher resolutions across the main and wide-angle lenses, resulting in better image quality, especially in low-light conditions.
  • Higher Quality Video Recording: Supports 8K video recording and advanced features like PDAF and CDAF, providing professional-level video capabilities.
  • Faster Charging: 65W fast charging replenishes the battery much quicker than the 33W charging of the Xiaomi.
  • Premium Audio: Features like Dolby Atmos, stereo speakers, and noise cancellation provide a superior audio experience.
  • Faster Connectivity: WiFi 6 and Bluetooth 5.2 support faster wireless speeds and better performance.
  • More Durable Screen Protection: Gorilla Glass 5 offers better scratch resistance than the Gorilla Glass 3.

Xiaomi Redmi Note 12 4G Advantages:

  • Newer Software: Launches with a more recent version of Android (13), likely with longer software support and newer features.
  • Larger Battery: The 5000 mAh battery offers potentially longer battery life than the OnePlus 9's 4500 mAh battery.
  • Slightly Brighter Display: 100 nits higher maximum brightness which can help with outdoor visibility.
  • Reverse Charging: Can be used to charge other devices.
  • Dedicated Macro Lens: Offers dedicated macro camera for close-up shots
  • Side-mounted Fingerprint Sensor: May be more convenient than a basic fingerprint sensor.
  • Lower Price Point: Likely to be more budget-friendly than the OnePlus 9, offering good value for basic smartphone usage.

Trade-offs:

  • OnePlus 9 sacrifices battery capacity and a dedicated macro lens for superior performance and camera quality.
  • Xiaomi Redmi Note 12 4G sacrifices performance and camera capabilities for a lower price, better battery life, and newer software.

3. User Profiles & Recommendations

Ideal User for OnePlus 9:

  • Gamers: Demanding games will run much smoother with the powerful Snapdragon 888 and Adreno 660 GPU.
  • Photography Enthusiasts: Those who prioritize high-quality images and videos, especially in challenging conditions.
  • Power Users: Individuals who require fast performance for multitasking and demanding applications.
  • Media Consumers: Users who appreciate the immersive audio experience offered by Dolby Atmos and stereo speakers.

Ideal User for Xiaomi Redmi Note 12 4G:

  • Budget-Conscious Buyers: Individuals looking for a good smartphone experience at an affordable price point.
  • Everyday Users: People who use their phones for basic tasks like social media, browsing, and communication.
  • Users Prioritizing Battery Life: Those who need a phone that can last all day without frequent charging.
  • Users who prefer newer software: Those who prefer a newer version of android with longer software support.

Specific Use Cases:

  • OnePlus 9: Playing graphically intense mobile games, shooting high-quality videos for social media, running multiple resource-heavy applications simultaneously.
  • Xiaomi Redmi Note 12 4G: Casual browsing, social media updates, taking snapshots during the day, using as a portable battery bank.

4. Decision Framework

Key Questions for Buyers:

  1. Performance Needs: How important is raw processing power and graphics performance for your daily tasks and gaming?
  2. Camera Quality: How important is capturing high-quality photos and videos, especially in low-light conditions?
  3. Budget: What is your maximum budget, and how much are you willing to spend for enhanced features?

Scenario-Based Recommendations:

  • Scenario 1 (High-Performance Focus): If you primarily use your phone for gaming, content creation, or run resource-intensive apps, the OnePlus 9 is the clear choice due to its vastly superior performance.
  • Scenario 2 (Budget and Battery Focus): If you are looking for an affordable device that has a long battery life and a decent screen, the Xiaomi Redmi Note 12 4G is the better option.
  • Scenario 3 (Balanced Needs): If you prioritize camera quality and processing power more than battery and price, and can pay a higher price, the OnePlus 9 will be the choice.

My Choice

Given my preference for a smooth experience, high quality camera, and faster performance, I would choose the OnePlus 9. Although the Xiaomi Redmi Note 12 4G is newer and has a larger battery, the drastically superior chipset, camera capabilities, audio experience, faster charging, and better screen protection of the OnePlus 9 justify choosing it. The faster performance and better camera are more important to me than the slightly longer battery life of the Xiaomi. While I acknowledge the benefits of the newer software on the Xiaomi, I can still operate on older Android versions, especially when the advantages of the OnePlus 9 are so high.

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.