Samsung Galaxy M12 vs Oppo A55 - Detailed Phone Comparison

Detailed Comparison

Specification
Oppo A55
Oppo A55
Oppo

General

Launch Date April 30, 2021 October 1, 2021
Release Year 2021 2021

Physical

Volume 120.74 cm³ 104.03 cm³
Screen Size to Weight Ratio 3.07 "/g 3.37 "/g
Weight 212 g 193 g
Height 164 mm 163.6 mm
Width 75.9 mm 75.7 mm
Thickness 9.7 mm 8.4 mm
Foldable Design No No
Available Colors
  • Black
  • Blue
  • Green
  • Green
  • Starry Black
  • Rainbow Blue

Display

Screen Size 6.5 " 6.51 "
Resolution 720 x 1600 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 81.9 % 82.6 %
Pixel Density 270 PPI 270 PPI
Refresh Rate 90 Hz N/A
Typical Brightness N/A 480 nits
HBM Brightness N/A N/A
Peak Brightness N/A 550 nits

Hardware

Battery Capacity per Screen Area 118.34 mAh/in² 117.98 mAh/in²
Battery Density 41.41 mAh/cm³ 48.06 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 850 (8 nm) Mediatek MT6765G Helio G35 (12 nm)
CPU Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55) Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU Mali-G52 PowerVR GE8320

Connectivity

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

Software

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

Comparison Summary

Smartphone Comparison: Samsung Galaxy M12 vs. Oppo A55

1. Specifications Comparison

FeatureSamsung Galaxy M12Oppo A55Practical Impact
Design
Launch Date2021-04-302021-10-01Oppo A55 is a newer model by about 5 months, potentially having some newer software optimizations.
Dimensions164 × 75.9 × 9.7 mm163.6 × 75.7 × 8.4 mmOppo A55 is slightly thinner and more compact, likely feeling better in hand and pocket.
Weight212g193gOppo A55 is significantly lighter, making it more comfortable for longer use.
Display
Size6.5"6.51"Both have very similar display sizes, essentially identical for practical use.
Resolution720x1600720x1600Identical resolution means the same sharpness.
PPI270270Identical pixel density, offering the same level of clarity.
TechnologyPLS LCDIPS LCDIPS LCD generally offers better viewing angles and color accuracy.
Refresh Rate90Hz60HzSamsung M12's 90Hz offers smoother scrolling and animations, a more fluid user experience.
Brightness0 nits0 nitsPeak brightness is not available for both phones. This is a significant limitation.
Performance
ChipsetExynos 850 (8 nm)Mediatek Helio G35 (12 nm)Exynos 850 is built on a more efficient process, but the Helio G35 has a much higher benchmark score
AnTuTu Score117,341379,800Oppo A55 has a much higher AnTuTu benchmark score, suggesting significantly better overall performance.
GPUMali-G52PowerVR GE8320Different GPUs, but the Oppo A55's GPU paired with its overall AnTuTu score will lead to better gaming
Battery
Capacity5000mAh5000mAhBoth have the same battery capacity, suggesting comparable battery life.
Charging15W fast charging10W fast chargingSamsung M12 charges faster, reducing downtime.
Camera
Main Camera48MP, f/2.013MP, f/2.2Samsung M12's main camera has a significantly higher resolution, potentially capturing more detail, and a wider aperture which is better in low light.
Selfie Camera8MP, f/2.28MP, f/2.0Oppo A55 selfie camera has a wider aperture, potentially performing slightly better in low light.
Wide Angle lens5MP, f/2.2N/ASamsung M12 has a dedicated ultra-wide lens for capturing more in a scene.
Portrait mode (depth)2MP, f/2.42MP, f/2.4Similar depth sensors for portrait mode, should produce similar results.
Macro lens2MP, f/2.42MP, f/2.4Similar macro lenses, offering similar close-up capabilities.
Video Recording1080p@30fps, No Slow-mo1080p@30fps, 120fps slow-moBoth record at 1080p, but Oppo A55 offers a slow-motion feature at 120fps
Software
OSAndroid 11Android 11Both come with Android 11.
Connectivity
Wi-Fi802.11b/g/n802.11a/b/g/n/acOppo A55 supports faster Wi-Fi standards, including dual band and 802.11ac.
Bluetooth5.05.1 LEOppo A55 has a newer version, generally offering better power efficiency and stability.
GPSGPS, A-GPS, GLONASS, BeidouGPS, A-GPS, GLONASS, Beidou, QZSS, GalileoOppo A55 supports more satellite systems, potentially for better location accuracy.
Storage
Internal Storage32/64/128GB128 GBOppo A55 has a 128 GB storage capacity as its base model, the same as the max for the M12
RAM3/4/6 GB6/8 GBOppo A55 generally has more RAM, better for multitasking and future-proofing.
Expandable StorageNoNoNeither device supports microSD storage expansion.
Other
Securityside-mounted fingerprint sensorside-mounted fingerprint sensorBoth have similar fingerprint sensor technology, offers basic biometric security
Screen ProtectionUnknownUnknownScreen protection details are unavailable for both phones.
SensorsAccelerometer, Gyroscope, Proximity, Fingerprint, HallAccelerometer, Gyroscope, Proximity, Fingerprint, Gravity, GeomagneticBoth phones have similar sensor suites, but they both have additional sensors for more advanced features

2. Key Differences Analysis

Samsung Galaxy M12 Advantages:

  • Smoother Display: 90Hz refresh rate makes scrolling and animations feel more fluid.
  • Faster Charging: 15W charging is quicker than the Oppo A55's 10W.
  • Higher Resolution Main Camera: A higher resolution of 48MP may allow for sharper, more detailed photos.
  • Dedicated Ultra-Wide Lens: Offers a dedicated ultra-wide lens for more creative photography.

Oppo A55 Advantages:

  • Significantly Better Performance: The AnTuTu score indicates a huge difference in performance, offering faster app loading, smoother multitasking, and better gaming capabilities.
  • Better Bluetooth Standard: Bluetooth 5.1 LE offers better power efficiency and stability.
  • Superior Display Technology: IPS LCD panel generally provides better color accuracy and viewing angles.
  • More RAM: 8 GB option makes for better multi-tasking.
  • More Satellite Systems for GPS: Increased accuracy in location data.
  • More advanced WiFi: Dual-band and 802.11ac support for faster speeds.
  • Slow-motion Video Recording: 120fps slow-motion.

Trade-offs:

  • The Samsung Galaxy M12 offers smoother scrolling but comes at the cost of less powerful performance and less capable display technology.
  • The Oppo A55 provides a superior overall performance and better display technology but lacks the 90Hz refresh rate and faster charging speed.

3. User Profiles & Recommendations

Samsung Galaxy M12:

  • Ideal User: Budget-conscious users who value a smooth display for social media and browsing.
  • Use Cases:
    • Casual media consumption (YouTube, social media)
    • Daily tasks like messaging and emails
    • Users who prioritize a fluid display experience.
    • Users who want a wide angle camera.

Oppo A55:

  • Ideal User: Users who prioritize performance, a great display, and overall responsiveness.
  • Use Cases:
    • Mobile gaming, especially light to mid-level games
    • Multitasking between several apps
    • Users who frequently switch between apps
    • Users who prefer taking photos in low light
    • Users who need more accurate GPS.
    • Users who would like slow-motion video recording.

4. Decision Framework

Key Questions for Buyers:

  1. How important is smooth display performance for you? (90Hz refresh rate of M12 vs 60Hz of A55)
  2. How important is overall performance for gaming and multitasking? (AnTuTu scores reveal a performance gap)
  3. How important is low-light photography? (Consider the wider aperture of the Oppo A55's selfie camera, and the wider aperture and higher resolution of the M12's main camera)
  4. Do you need a wide angle lens? (Only the M12 has this feature)

Scenario-Based Recommendations:

  • Scenario 1: Casual User: If you mostly browse, check social media, and watch videos, the Samsung M12 is an okay choice. But the better performance and overall package of the Oppo A55 makes it a worthwhile upgrade even for casual users.
  • Scenario 2: Gamer: If you play mobile games or use resource-intensive apps, the Oppo A55's superior performance is the clear choice.
  • Scenario 3: Photographer: The M12 has a higher resolution main camera and the addition of a wide angle lens, which may sway some buyers to choose it over the Oppo. The better low-light capabilities of the A55's selfie camera, paired with its overall quality, is a positive selling point.

My Choice and Why

If I were choosing between these two phones, I would select the Oppo A55. While the 90Hz refresh rate of the Samsung M12 is appealing for its smooth scrolling, the significantly superior performance of the Oppo A55, as highlighted by its drastically higher AnTuTu benchmark score, is more crucial for my needs. I value a phone that can handle multitasking, app loading, and even some light gaming without any lag. The better Bluetooth standard, better display technology, higher RAM option, and enhanced GPS accuracy are additional benefits that would improve my overall user experience. The better low light capabilities of the selfie camera on the A55 and the overall performance is a worthy trade-off for the wide-angle lens and slightly higher resolution main camera on the M12, as the A55 is the better all-around device for my purposes.

Although the screen protection for both phones are not listed, the A55 seems to have the better package for my use case.

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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