Samsung Galaxy A42 5G vs Realme C31 - Detailed Phone Comparison

Detailed Comparison

Specification
Realme C31
Realme C31
Realme

General

Launch Date November 11, 2020 March 31, 2022
Release Year 2020 2022

Physical

Volume 107.31 cm³ 105.28 cm³
Screen Size to Weight Ratio 3.42 "/g 3.3 "/g
Weight 193 g 197 g
Height 164.4 mm 164.7 mm
Width 75.9 mm 76.1 mm
Thickness 8.6 mm 8.4 mm
Foldable Design No No
Available Colors
  • Prism Dot Black
  • Prism Dot White
  • Prism Dot Gray
  • Light Silver
  • Dark Green

Display

Screen Size 6.6 " 6.5 "
Resolution 720 x 1600 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.3 % 81.4 %
Pixel Density 266 PPI 270 PPI
Refresh Rate N/A N/A
Typical Brightness N/A 400 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 114.78 mAh/in² 118.34 mAh/in²
Battery Density 46.59 mAh/cm³ 47.49 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM7225 Snapdragon 750 5G (8 nm) Unisoc Tiger T612 (12 nm)
CPU Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570) Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 619 Mali-G57

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy A42 5GRealme C31Practical Impact
Design
Launch Date2020-11-112022-03-31Realme C31 is newer, potentially with more up-to-date software & features.
Dimensions164.4 × 75.9 × 8.6 mm164.7 × 76.1 × 8.4 mmVirtually identical, pocketability will be similar for both phones.
Weight193g197gNegligible weight difference, both feel similar in hand.
Display
Size6.6"6.5"Marginal difference, both offer similar viewing experience, negligible screen real estate.
Resolution720x1600720x1600Identical clarity, both have HD+ resolution.
PPI266270Virtually identical pixel density, both offer similar sharpness.
TechnologyAMOLEDIPS LCDA42 5G has superior display tech offering richer colors, deeper blacks, and better power efficiency with dark themes.
Refresh Rate60Hz60HzBoth have standard 60Hz refresh rate.
Brightness0 nits0 nitsPeak brightness is not available, making it impossible to assess outdoor visibility
Performance
ChipsetQualcomm SM7225 Snapdragon 750 5G (8 nm)Unisoc Tiger T612 (12 nm)A42 5G has a significantly more powerful processor, enabling faster app loading and better gaming performance.
AnTuTu Score392,400224,223A42 5G has superior performance in benchmarks, reflecting real-world responsiveness and smoother operation.
GPUAdreno 619Mali-G57 MP1A42 5G’s GPU enables better graphical performance, especially in gaming.
Camera
Main Camera48MP, f/1.813MP, f/2.2A42 5G has higher resolution and a wider aperture, allowing for more detail and better low-light performance.
Selfie Camera20MP, f/2.25MP, f/2.2A42 5G captures much more detailed selfies.
Wide Angle Lens5MP, f/2.2N/AA42 5G has the additional capability to capture wider scenes
Portrait Mode (Depth)5MP, f/2.4N/AA42 5G has dedicated depth sensor for background blur in portrait photos
Macro Lens5MP, f/2.42MP, f/2.4A42 5G takes higher quality close-up photos
Black & WhiteN/A2MP, f/2.8C31 has a dedicated lens for artistic monochrome shots
Video4K@30fps, 1080p@30fps, 720p@480fps1080p@30fpsA42 5G captures videos with greater detail and clarity at 4K resolution.
Video StabilizationNot specifiedDigitalC31 has digital video stabilization. A42 5G video stabilization capability is not specified.
Slow Motion480 fps30 fpsA42 5G has much better slow-motion capabilities.
Battery
Capacity5000mAh5000mAhIdentical battery life for comparable usage patterns.
Charging15W10WA42 5G charges the battery faster.
Software
OSAndroid 10 (upgradable to 13)Android 11Realme C31 is launched with a newer Android version out of the box, but the A42 5G can be updated to Android 13.
Connectivity
WiFi802.11a/b/g/n/ac802.11b/g/nA42 5G supports faster and more reliable Wi-Fi standards.
Bluetooth5.05.0 LEA42 5G has broader Bluetooth profile support.
Storage
Internal128 GB32GB/64GBA42 5G has more storage for apps, photos, and videos.
RAM4GB/6GB/8GB3GB/4GBA42 5G has more RAM for smoother multitasking.
ExpandableNoNoNeither phone allows for memory expansion.
Other
Fingerprint SensorBasicSide-mountedRealme C31 has a more modern and ergonomic fingerprint sensor.
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeProximity, Accelerometer, Compass, GyroscopeA42 5G has the fingerprint sensor.

2. Key Differences Analysis

Samsung Galaxy A42 5G Advantages:

  • Superior Display: AMOLED screen provides significantly better visual quality compared to IPS LCD.
  • Faster Performance: Snapdragon 750 5G chipset offers vastly superior processing power, better for gaming and multitasking.
  • Better Camera System: Higher resolution main, selfie, and macro cameras result in sharper, more detailed photos. Inclusion of wide-angle and depth sensors enhance versatility.
  • Faster Charging: 15W charging is noticeably quicker than 10W.
  • More RAM & Storage: Higher RAM options and larger base storage provide better multitasking and more storage for content.
  • Advanced Connectivity: Better WiFi standards and broader Bluetooth support.
  • 4K Video Recording: Allows for higher resolution video recording compared to the Realme C31.

Realme C31 Advantages:

  • Newer Launch Date: Potentially more up-to-date software features at launch, but the Samsung Galaxy A42 5G can be updated.
  • Side-mounted Fingerprint Sensor: Generally considered more convenient and ergonomic than traditional sensors.
  • Dedicated Black & White Camera: Offers more creative photography options.
  • Digital Image Stabilization: Helps in smoother video recording.

Trade-offs:

  • A42 5G: Lacks a microSD card slot for expandable storage.
  • C31: Noticeably weaker in performance, camera capabilities, and display quality compared to the A42 5G.

3. User Profiles & Recommendations

Samsung Galaxy A42 5G Ideal User:

  • Users who prioritize performance for gaming or demanding applications.
  • Individuals who value high-quality photos and videos.
  • Users who consume a lot of media and appreciate a vibrant display.
  • Those who need ample storage and want smoother multitasking.
  • Those looking for a phone with good connectivity capabilities, including newer WiFi standards.

Use Cases:

  • Mobile gaming at medium-high settings.
  • Shooting high-quality 4K videos and detailed photos.
  • Watching videos and movies with a superior display.
  • Heavy multitasking and running demanding apps.

Realme C31 Ideal User:

  • Budget-conscious buyers looking for a basic smartphone.
  • Users who prioritize battery life for daily tasks.
  • Individuals who prefer a side-mounted fingerprint sensor.
  • Those looking for a basic phone for communication and browsing.

Use Cases:

  • Basic daily communication, web browsing, and social media.
  • Longer usage between charges for less demanding use cases.
  • Occasional photography in well-lit conditions.

Price-to-Value Ratio: The Samsung Galaxy A42 5G has a better price-to-value ratio for users who prioritize performance, display quality and camera capabilities, while the Realme C31 is a better value for budget conscious users who do not need much power.

4. Decision Framework

Key Questions for Buyers:

  1. How important is performance and gaming? If heavy usage is expected, the A42 5G is much better. If only basic tasks are needed, the C31 will suffice.
  2. How important is camera quality? If taking detailed photos and videos is a priority, the A42 5G's capabilities are superior.
  3. Is display quality a major factor? The A42 5G's AMOLED screen offers a much better visual experience.

Scenario-Based Recommendations:

  • Scenario 1: Heavy User/Gamer: Choose the Samsung Galaxy A42 5G for its superior performance, gaming capabilities, better camera, and vibrant AMOLED display.
  • Scenario 2: Budget-Conscious User: The Realme C31 is a better choice for basic needs, a side-mounted fingerprint reader, and a lower price point.
  • Scenario 3: Photography Enthusiast: The Samsung Galaxy A42 5G is the clear winner due to better quality images, higher resolution video recording, and versatility offered by multiple lenses.
  • Scenario 4: Long Battery Life Both phones have a 5000 mAh battery. Given similar battery capacity, the choice should be based on other factors.

My Choice

If I had to choose, I would pick the Samsung Galaxy A42 5G. Here's why:

While both phones have the same screen size and battery capacity, my choice is based on the following:

  1. Superior Performance: The Snapdragon 750 5G chipset is significantly more powerful than the Unisoc T612, providing smoother operation and better gaming experience.
  2. Better Display: The AMOLED display of the A42 5G offers far superior visual quality compared to the IPS LCD of the Realme C31, making media consumption a much more enjoyable experience.
  3. Enhanced Camera System: The camera capabilities of the A42 5G, with its higher resolution main, selfie, and macro sensors, along with the addition of wide-angle and depth sensors, are vastly better than those of the Realme C31.
  4. 4K Video Recording: The ability to record in 4K is an important feature for future-proofing.

While the Realme C31 is a more affordable option with a side-mounted fingerprint sensor and a more recent launch date, these advantages do not outweigh the superior performance, display quality, and camera system offered by the Samsung Galaxy A42 5G for my personal needs. The Samsung Galaxy A42 5G offers a more well-rounded experience and better value for my priorities.

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.