OnePlus 9 vs Oppo A54 5G - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus

General

Launch Date March 26, 2021 April 14, 2021
Release Year 2021 2021

Physical

Volume 103.29 cm³ 102.22 cm³
Screen Size to Weight Ratio 3.41 "/g 3.42 "/g
Weight 192 g 190 g
Height 160 mm 162.9 mm
Width 74.2 mm 74.7 mm
Thickness 8.7 mm 8.4 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Fluid Black
  • Fantastic Purple
  • Space Silver

Display

Screen Size 6.55 " 6.5 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.2 % 83.8 %
Pixel Density 402 PPI 405 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A 480 nits
HBM Brightness N/A N/A
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 118.34 mAh/in²
Battery Density 43.57 mAh/cm³ 48.92 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Qualcomm SM4350 Snapdragon 480 5G (8 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (2x2.0 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
GPU Adreno 660 Adreno 619

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 13

Comparison Summary

Smartphone Comparison: OnePlus 9 vs. Oppo A54 5G

1. Specifications Comparison

FeatureOnePlus 9Oppo A54 5GPractical Impact
Design
Dimensions160 × 74.2 × 8.7 mm162.9 × 74.7 × 8.4 mmOppo A54 5G is slightly taller and thinner; OnePlus 9 is a bit more compact in width and a touch thicker. Differences are minor and likely not noticeable in hand.
Weight192g190gVirtually identical weight, negligible difference in hand feel.
Display
Size6.55"6.5"Similar screen size; negligible difference in viewing area.
Resolution1080x24001080x2400Identical sharpness, both provide detailed visuals for most use cases.
PPI402405Virtually identical pixel density, resulting in similar sharpness.
TechnologyAMOLEDIPS LCDOnePlus 9's AMOLED offers significantly better contrast, deeper blacks, and more vibrant colors, superior for media consumption. Oppo A54 5G's LCD will be slightly less vibrant and have less optimal viewing angles.
Refresh Rate120Hz90HzOnePlus 9 provides smoother scrolling, animations, and gaming experience. Oppo A54 5G still has a fast refresh rate but less smooth.
Brightness1100 nits0 nitsOnePlus 9 is much more usable outdoors under bright sunlight. The Oppo A54 5G has no specified brightness and is likely hard to see in bright conditions.
Performance
ChipsetQualcomm Snapdragon 888 5G (5 nm)Qualcomm Snapdragon 480 5G (8 nm)OnePlus 9 offers dramatically faster performance, better for demanding tasks like gaming, video editing, and heavy multitasking. Oppo A54 5G is better for basic tasks and light use, where the user doesn't need to process complex data.
AnTuTu Score880,900216,504OnePlus 9 performs much better in benchmarks, indicating a significantly faster and more responsive experience. Oppo A54 5G will be slow for complex data processing
GPUAdreno 660Adreno 619OnePlus 9's GPU provides superior graphics performance for gaming and GPU-intensive applications. Oppo A54 5G is sufficient for most 3D gaming but at lower graphics settings
Battery
Capacity4500mAh5000mAhOppo A54 5G likely offers better battery life on a single charge due to its larger capacity. However, usage of the phones and chipset will affect this result.
Charging65W fast charging18W fast chargingOnePlus 9 charges much faster, reducing downtime and increasing usability. The Oppo A54 5G charges slowly.
Features15W Wireless ChargingInbox charger 10WOnePlus 9 offers convenient wireless charging. Oppo A54 5G includes a 10W charger in the box.
Camera
Main Camera48MP, f/1.79, 1/1.4" sensor48MP, f/1.7, 1/2" sensorOnePlus 9 has larger sensor for superior image quality, especially in low light and more detail. The Oppo A54 5G has a slightly wider aperture, but the smaller sensor will not provide the same quality.
Selfie Camera16MP, f/2.4, 1/3.13" sensor16MP, f/2.0, 1/3.13" sensorOppo A54 5G has a slightly wider aperture for better low-light selfies. Similar image quality overall due to same sensor.
Wide Angle Camera50MP, f/2.2, 1/1.56" sensor8MP, f/2.2OnePlus 9's wide-angle has significantly higher resolution for better detail. Oppo A54 5G will have much less detail.
Macro LensNone2MP, f/2.4Oppo A54 5G offers dedicated macro shots. OnePlus 9 doesn't include this lens.
Black & White Lens2MP, f/2.42MP, f/2.4Both have a dedicated 2MP B&W sensor
Video Recording8K@30fps, 4K@60fps (with HDR, EIS)1080p@30fps (with EIS)OnePlus 9 offers higher resolution and frame rates for professional-grade video recording. Oppo A54 5G is limited to standard HD video.
Features4K, 8K Video, RAW 12 bits, EIS, PDAF, CDAFQuadruple camera, Laser AF, EIS, PDAF, CDAFOnePlus 9 has professional-level video features, while the Oppo A54 5G includes a laser AF for faster focusing.
Software
OSAndroid 11 (Upgradable to 13)Android 11OnePlus 9 has future update support to Android 13. It is unclear if the A54 will receive further updates.
Connectivity
Wi-FiWiFi 6 (802.11ax)802.11acOnePlus 9 supports faster Wi-Fi for better network performance.
Bluetooth5.2 LE5.1 LEOnePlus 9 has slightly newer Bluetooth for better efficiency and slightly faster data transfer.
GPSGPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2)GPS, A-GPS, GLONASS, Beidou, QZSS, GalileoOnePlus 9 has more accurate positioning, especially in urban environments.
SIMDual Nano SIMDual Nano SIMBoth offer dual SIM functionality.
Storage
Internal128 GB / 256 GB64 GB / 128 GB / 256 GBBoth offer 256GB max storage. Oppo A54 5G also has a 64GB option.
RAM8GB / 12 GB4GB / 8GBOnePlus 9 has more RAM for smoother multitasking and better app performance, especially with the 12GB option.
ExpandableNoNoNeither supports memory cards.
Audio
QualityDolby Atmos, Stereo SpeakersBasicOnePlus 9 provides superior audio quality with more immersive sound.
Security
FeaturesBasic Fingerprint SensorSide-mounted Fingerprint sensorOppo A54 5G has a more convenient side-mounted fingerprint sensor.
Build Quality
Screen ProtectionCorning Gorilla Glass 5UnknownOnePlus 9 has superior screen protection from scratches and damage.
Sensors
SensorsAccelerometer, Compass, Gyroscope, Fingerprint, ProximityAccelerometer, Compass, Gyroscope, Fingerprint, Proximity, GravityOppo A54 5G has an additional gravity sensor.

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Superior Display: AMOLED technology with 120Hz refresh rate and significantly higher brightness. Practical Impact: Offers much better visual quality, smoother animations, and is more usable outdoors.
  • Much Faster Performance: Snapdragon 888 chipset. Practical Impact: Delivers noticeably smoother and faster performance in all tasks, particularly in demanding games and apps.
  • Better Camera System: Larger sensor, higher-resolution wide-angle lens, and advanced video features. Practical Impact: Takes better photos and videos in most scenarios, particularly in low light.
  • Faster Charging: 65W wired charging and 15W wireless charging. Practical Impact: Significantly reduces charging time and provides wireless charging convenience.
  • Better Audio: Stereo speakers and Dolby Atmos support. Practical Impact: Offers a richer and more immersive audio experience.
  • More Advanced Connectivity: Faster WiFi and Bluetooth version and better positioning. Practical Impact: Ensures a better online experience.
  • More RAM: Option for 12GB of RAM. Practical Impact: Provides smoother multitasking experience and future proofing.

Oppo A54 5G Advantages:

  • Larger Battery: 5000mAh capacity. Practical Impact: Likely offers slightly longer battery life.
  • Dedicated Macro Lens: Practical Impact: Enables close-up photography of small objects.
  • Side-Mounted Fingerprint Sensor: Practical Impact: More intuitive placement for some users.
  • Lower Cost: (Assuming this is a mid-range phone). Practical Impact: More affordable for budget-conscious users.
  • Inbox Charger: Practical Impact: Comes with a charger out the box.

Significant Trade-offs:

  • OnePlus 9: Lower battery capacity, no macro lens, potentially higher price.
  • Oppo A54 5G: Significantly slower performance, lower quality display, inferior camera, much slower charging speeds, lower quality audio.

3. User Profiles & Recommendations

Ideal User for OnePlus 9:

  • Power Users: Those who demand high performance for gaming, multitasking, and demanding applications.
  • Media Consumers: Users who prioritize a vibrant, high-quality display for watching videos and browsing content.
  • Photography Enthusiasts: Individuals who want a versatile camera system with advanced features for high quality videos and photos.
  • Users on the go: Users who do not want to worry about running out of battery, or having to spend a long time charging the phone.

Specific Use Cases:

  • High-end mobile gaming
  • Video editing
  • High-quality content creation
  • Outdoor use under bright sunlight
  • Frequent travel and charging on the go

Ideal User for Oppo A54 5G:

  • Budget-Conscious Users: Those looking for an affordable 5G phone for basic everyday tasks.
  • Casual Users: Individuals who primarily use their phone for browsing, social media, and basic communication.
  • Users Prioritizing Battery Life: Those who value long battery life over performance and advanced features.
  • Users who want a macro camera: For those that like to take close up shots.

Specific Use Cases:

  • Basic web browsing and social media use
  • Light gaming
  • Longer battery life for day to day usage
  • Macro photography

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? (OnePlus 9 will be more expensive than the Oppo A54 5G).
  2. How important is performance? (Do you need a phone for heavy gaming or intensive tasks?)
  3. How much do you value display quality? (Is a vibrant display essential for your viewing experience?)

Scenario-Based Recommendations:

  • Scenario 1: High Performance and Quality are Key: If you want the best possible performance, a superior display, and an advanced camera, and your budget allows, the OnePlus 9 is the clear choice.
  • Scenario 2: Basic Usage and Budget is a Priority: If you only need a phone for basic tasks, and want an affordable price, the Oppo A54 5G will be sufficient. However, you will have a worse experience overall in terms of speed and quality.
  • Scenario 3: Prioritizing Battery Life: If you need a phone that lasts as long as possible, the Oppo A54 5G might be better, but the lack of features and lower performance will be very noticeable.
  • Scenario 4: Macro Photography: If you like taking close up pictures and want a macro lens, the Oppo A54 5G will be the better option, although the main and wide-angle cameras will be worse.

My Choice:

I would choose the OnePlus 9. While it may be more expensive and has a slightly smaller battery, the performance advantages, superior display quality, significantly better camera system, and faster charging make it a much better overall device for my needs. I prioritize smooth performance, great media experience, and solid camera capabilities. The significantly faster processor and superior screen alone are worth the extra cost, in addition to the advanced connectivity and audio quality. The Oppo A54 5G is a good budget option, but for anyone that is seeking a better experience across the board, the OnePlus 9 is a clear winner.

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
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Bridging technical complexity with engaging, accessible narratives.