Samsung Galaxy A42 5G vs vivo V21 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date November 11, 2020 May 6, 2021
Release Year 2020 2021

Physical

Volume 107.31 cm³ 86.15 cm³
Screen Size to Weight Ratio 3.42 "/g 3.66 "/g
Weight 193 g 176 g
Height 164.4 mm 159.7 mm
Width 75.9 mm 73.9 mm
Thickness 8.6 mm 7.3 mm
Foldable Design No No
Available Colors
  • Prism Dot Black
  • Prism Dot White
  • Prism Dot Gray
  • Arctic White
  • Dusk Blue
  • Sunset Dazzle

Display

Screen Size 6.6 " 6.44 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.3 % 84.8 %
Pixel Density 266 PPI 409 PPI
Refresh Rate N/A 90 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 114.78 mAh/in² 96.45 mAh/in²
Battery Density 46.59 mAh/cm³ 46.43 mAh/cm³
Battery Capacity 5000 mAh 4000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM7225 Snapdragon 750 5G (8 nm) Mediatek Dimensity 800U (7 nm)
CPU Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570) Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 619 Mali-G57 MC3

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 10 11
Maximum OS Version 13

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Samsung Galaxy A42 5G and the vivo V21 5G, focusing on practical implications:

FeatureSamsung Galaxy A42 5Gvivo V21 5GPractical Impact
Design
Dimensions164.4 x 75.9 x 8.6 mm159.7 x 73.9 x 7.3 mmThe vivo V21 5G is more pocketable and easier to handle one-handed due to its slimmer profile and lighter weight.
Weight193g176gThe vivo V21 5G is noticeably lighter, improving comfort during extended use.
Display
Size6.6"6.44"The Galaxy A42 5G offers slightly more screen real estate for media consumption and multitasking.
Resolution720x16001080x2400The vivo V21 5G has a significantly sharper and more detailed display, resulting in a better viewing experience for photos, videos, and text.
Pixel Density (PPI)266409The higher PPI on the vivo V21 5G translates to crisper images and text, reducing eye strain.
Refresh Rate60Hz90HzThe 90Hz refresh rate on the vivo V21 5G provides smoother scrolling, animations, and gaming experiences.
Performance
ChipsetQualcomm Snapdragon 750 5G (8 nm)MediaTek Dimensity 800U (7 nm)Both are capable mid-range chips. The Snapdragon 750 5G is slightly more powerful based on the AnTuTu score.
AnTuTu Score392,400343,150The Galaxy A42 5G may offer slightly smoother performance in demanding games and applications.
GPUAdreno 619Mali-G57 MC3The Adreno 619 might offer a slight edge in graphics-intensive tasks.
Camera
Main Camera48MP, f/1.864MP, f/1.79The vivo V21 5G's higher resolution and wider aperture should result in better low-light performance and more detailed photos.
Ultrawide Camera5MP, f/2.28MP, f/2.2vivo V21 5G offers slightly more detailed wide-angle shots.
Selfie Camera20MP, f/2.244MP, f/2.0The vivo V21 5G excels in selfie quality, capturing more detail and performing better in low light. It also has a front flash for even better lit selfies.
Video RecordingUp to 4K@30fpsUp to 4K@30fps with OISThe vivo V21 5G's Optical Image Stabilization (OIS) results in smoother, more stable videos, especially in shaky conditions.
Battery
Capacity5000mAh4000mAhThe Galaxy A42 5G is likely to provide longer battery life due to its significantly larger battery capacity.
Charging Speed15W33WThe vivo V21 5G charges much faster, reducing downtime.
Storage
Internal Storage128GB128GB / 256GBvivo V21 5G offers a higher storage option for users with larger media libraries.
Expandable StorageNoNoNeither phone allows for storage expansion.
Software
OS at launchAndroid 10Android 11The vivo V21 5G launches with a newer version of Android, potentially offering more features and security updates out of the box.
Max OS VersionAndroid 13UnknownThe Galaxy A42 5G is confirmed to be upgradeable to Android 13.
Connectivity
Bluetooth5.05.1Bluetooth 5.1 on the vivo V21 5G may offer slightly improved connection stability and efficiency.

2. Key Differences Analysis

Samsung Galaxy A42 5G Advantages:

  • Larger Battery: The 5000mAh battery offers potentially longer battery life, suitable for users who need their phone to last through heavy usage.
  • Slightly better performance: The slightly better Antutu score makes it negligibly better for heavy tasks.
  • Confirmed OS Updates: Guaranteed update to Android 13 is a plus.
  • Portrait and Macro Lens: The phone has dedicated lenses for portrait and macro shots.

vivo V21 5G Advantages:

  • Superior Display: The higher resolution and 90Hz refresh rate provide a significantly better viewing experience, making content consumption more enjoyable.
  • Better Camera (especially selfie): The higher resolution front camera with a wider aperture and front flash results in superior selfies, especially in low light. The main camera also benefits from OIS.
  • Faster Charging: The 33W fast charging drastically reduces charging times.
  • Lighter and Slimmer Design: More comfortable to hold and carry.
  • Newer Bluetooth Version: slightly improved connection.

Trade-offs:

  • The Galaxy A42 5G sacrifices display quality and charging speed for longer battery life.
  • The vivo V21 5G prioritizes display and camera quality but has a smaller battery and lower confirmed OS updates.

3. User Profiles & Recommendations

  • Samsung Galaxy A42 5G:

    • Ideal User: Users who prioritize battery life above all else and need a phone that can last through a full day of heavy use.
    • Use Cases: Long commutes, travel, gaming, or any situation where access to a charger is limited.
    • Price-to-Value: Good if battery is paramount and other features are secondary.
  • vivo V21 5G:

    • Ideal User: Users who value display quality, camera performance (especially selfies), and fast charging.
    • Use Cases: Social media enthusiasts, photography lovers, video creators, and those who frequently watch videos or play games on their phone.
    • Price-to-Value: Excellent if you prioritize a premium display and camera experience.

4. Decision Framework

Here are three key questions to help buyers decide:

  1. How important is battery life to you? If you need a phone that can easily last a full day of heavy use without needing to be charged, the Galaxy A42 5G is the better choice.
  2. How much do you value display quality and camera performance? If you prioritize a sharp, vibrant display and a high-quality camera for photos and videos (especially selfies), the vivo V21 5G is the clear winner.
  3. What is your budget? (Assuming similar prices) The decision hinges on whether you prioritize battery or display/camera quality.

Scenario-Based Recommendations:

  • Scenario 1: You're a student who needs a reliable phone that can last through a full day of classes and extracurricular activities. Recommendation: Samsung Galaxy A42 5G for its long battery life.
  • Scenario 2: You're a social media influencer who creates a lot of content on your phone and values high-quality selfies and videos. Recommendation: vivo V21 5G for its superior camera and display.
  • Scenario 3: You're a gamer who plays demanding games on your phone and wants a smooth and immersive experience. Recommendation: vivo V21 5G for its 90Hz display and faster charging.

My Choice

I would choose the vivo V21 5G. While the Galaxy A42 5G's larger battery is appealing, the overall experience offered by the vivo V21 5G is superior for my usage. The combination of a higher resolution display, 90Hz refresh rate, significantly better selfie camera, and faster charging makes it a more enjoyable and versatile device. The lighter and slimmer design is also a plus for everyday use.

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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  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.