Samsung Galaxy S21+ 5G vs Xiaomi Poco C40 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 June 17, 2022
Release Year 2021 2022

Physical

Volume 95.23 cm³ 119.52 cm³
Screen Size to Weight Ratio 3.35 "/g 3.29 "/g
Weight 200 g 204 g
Height 161.5 mm 169.6 mm
Width 75.6 mm 76.6 mm
Thickness 7.8 mm 9.2 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Coral Green
  • Poco Yellow
  • Power Black

Display

Screen Size 6.7 " 6.71 "
Resolution 1080 x 2400 720 x 1650
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 88.8 % 82 %
Pixel Density 394 PPI 268 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 400 nits
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 133.26 mAh/in²
Battery Density 50.4 mAh/cm³ 50.2 mAh/cm³
Battery Capacity 4800 mAh 6000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International JLQ JR510 (11 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (4x2.0 GHz Cortex-A55 & 4x1.5 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G57 MC1

Connectivity

USB Version 3.2 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 11 11
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
Dimensions161.5 × 75.6 × 7.8 mm169.6 × 76.6 × 9.2 mmPoco C40 is noticeably taller and thicker, making it less pocketable and potentially harder to handle with one hand.
Weight200g204gNegligible difference in weight; both feel similar in hand.

Display

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
Size6.7"6.71"Virtually identical screen size; minimal practical difference.
Resolution1080x2400720x1650S21+ offers a much sharper display with significantly more detail; text and images appear clearer.
PPI394268S21+ has a much higher pixel density, meaning a sharper and more detailed visual experience.
TechnologyAMOLEDIPS LCDS21+ display has superior contrast, deeper blacks, and more vibrant colors, especially noticeable in multimedia consumption.
Refresh Rate120Hz60HzS21+ provides a noticeably smoother scrolling and animation experience, more enjoyable for gaming and social media.
Brightness1300 nits0 nitsS21+ offers dramatically better outdoor visibility; the Poco C40's display may be difficult to see under direct sunlight. (Poco C40 brightness is unknown, likely substantially lower)

Performance

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
ChipsetExynos 2100 (5 nm)JLQ JR510 (11 nm)S21+ has a much more powerful chipset, resulting in smoother app loading, faster multitasking, and significantly better gaming performance.
AnTuTu Score749,100128,944S21+ is substantially faster; real-world usage demonstrates clear performance advantages in nearly all tasks.
GPUMali-G78 MP14Mali-G57 MC1S21+ has a much more powerful GPU, enabling better graphics for gaming and demanding apps.

Battery

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
Capacity4800mAh6000mAhPoco C40 has a much larger battery, potentially offering longer battery life. Actual battery life varies.
Charging25W fast charging18W fast chargingS21+ charges slightly faster, reducing charging times.
FeaturesWireless charging, reverse wireless charging, no charger in-boxCharger in boxS21+ has wireless charging capabilities and can charge other devices wirelessly, but lacks included charger; Poco C40 includes charger, lacks wireless options.

Camera

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
Standard Camera12MP, f/1.813MP, f/1.8Both have similar aperture, but the S21+ has a larger sensor, potentially better low light performance
Telephoto + Portrait Camera64MP, f/2.0NoneS21+ offers a telephoto zoom lens for superior zoom and portrait shots
Selfie Camera10MP, f/2.25MP, f/2.2S21+ has a higher resolution selfie camera, capturing more detail
Portrait Mode (Depth)None2MP, f/2.4Poco C40 includes a dedicated depth sensor for better portrait mode background blur.
Wide Angle + Macro Camera12.2MP, f/2.2NoneS21+ includes a dedicated wide angle lens for group shots and landscape images as well as a macro mode for close-up shots.
VideoUp to 8K@24fpsUp to 1080p@30fpsS21+ offers substantially higher video recording capabilities, suitable for more professional or advanced use.
DXOMark Score111 (Mobile)Not TestedS21+ has a tested camera quality, whereas the Poco C40 has not been tested. S21+ shows strong camera performance.
FeaturesOIS, 4K, 8K, Optical zoom, RAW, Night modeDigital image stabilization, HDRS21+ has advanced features and capabilities offering significantly more control over image and video production.

Other

FeatureSamsung Galaxy S21+ 5GXiaomi Poco C40Practical Impact
SoftwareAndroid 11 (up to 15)Android 11S21+ will receive more major android updates
WiFiWi-Fi 6Wi-Fi 5S21+ offers faster WiFi and better performance in crowded networks.
Bluetooth5.0 (Advanced)5.0 (Basic)S21+ supports more advanced Bluetooth codecs and features.
GPSMore SatellitesBasic GPSS21+ provides better accuracy and faster location acquisition
SIMDual SIM + eSIMDual SIMS21+ allows digital switching between carriers with eSIM
Storage128GB or 256GB32GB or 64GBS21+ offers significantly more storage for apps, photos, and videos.
RAM8GB3GB or 4GBS21+ has more RAM, enabling smoother multitasking and better app performance.
Expandable StorageNoNoBoth lack expandable storage
AudioStereo speakers, Dolby Atmos, Hi-Res audio, noise cancellationBasicS21+ provides a more immersive and higher-quality audio experience.
SecurityBasic fingerprint sensorRear fingerprint sensorSimilar functionality, placement is a matter of preference
ProtectionCorning Gorilla Glass VictusCorning Gorilla Glass 3S21+ screen provides significantly better scratch and shatter resistance.
SensorsComprehensive SuiteBasic sensorsS21+ provides better sensor information and features like a barometer

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Superior Display: AMOLED, higher resolution, 120Hz refresh rate, and significantly higher brightness. Implication: Much better visual experience for media consumption, gaming, and outdoor use.
  • Much Faster Performance: Significantly more powerful chipset and GPU. Implication: Smooth multitasking, faster app loading, better gaming, and longer-term usability.
  • Advanced Camera System: Telephoto lens, better selfie camera, 8K video recording, OIS, more features. Implication: Far greater versatility and higher image/video quality for advanced photography needs.
  • Better Connectivity & Features: Wi-Fi 6, advanced Bluetooth, eSIM support, comprehensive GPS, better audio. Implication: More future-proofed connectivity and superior user experience in various applications.
  • Higher Storage and RAM: More storage and RAM for more apps, media, and smoother multitasking.
  • Superior build: Corning Gorilla Glass Victus provides superior protection

Xiaomi Poco C40 Advantages:

  • Larger Battery: 6000mAh battery. Implication: Potentially longer battery life, though actual endurance depends on usage.
  • Included Charger: Implication: Ready to use out of the box, unlike the S21+.
  • Lower Price: Implication: Provides a more affordable option for budget users.

Significant Trade-offs

  • S21+: Lacks expandable storage, ships without a charger, and has a smaller battery capacity compared to the Poco C40.
  • Poco C40: Significantly lower performance, lower screen resolution/quality, inferior cameras, and basic audio features compared to the S21+.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G Ideal Users:

  • Power Users: Those who need fast performance for gaming, multitasking, and demanding apps.
  • Photography Enthusiasts: Users who prioritize high-quality images and video recording with advanced features.
  • Multimedia Consumers: Individuals who enjoy high-resolution streaming, HDR content, and gaming.
  • Tech-Savvy Users: Individuals who value advanced features, better connectivity, and premium build quality.

Specific Use Cases:

  • Mobile Gaming: Smooth gameplay and high graphics thanks to the powerful chipset and 120Hz display.
  • Professional Photography/Videography: Advanced camera features like 8K video and telephoto lens for capturing high quality images.
  • Heavy Multitasking: 8GB of RAM allows for switching seamlessly between many applications.
  • Outdoor use: The bright screen and superior contrast allow for clear viewing in direct sunlight.

Xiaomi Poco C40 Ideal Users:

  • Budget-Conscious Users: Those who need a basic smartphone without breaking the bank.
  • Users Prioritizing Battery Life: Individuals who need a device that lasts a long time on a single charge and don't have access to a charger throughout the day.
  • Casual Smartphone Users: Those who primarily use their phones for calls, texts, social media, and basic web browsing.

Specific Use Cases:

  • Long Battery Life: Ideal for users who don't have frequent access to power outlets.
  • Basic Day-to-Day Use: Suitable for individuals who only require the basic functions of a smartphone.
  • Secondary phone: Can serve as a secondary phone due to long battery life for a second phone number or for travel.

Price-to-Value Ratio:

  • S21+: Higher initial cost, but offers significantly higher performance, a superior display, more advanced features, and a more robust build. Better long-term value.
  • Poco C40: Lower upfront cost, but lacks higher end features. May feel sluggish for heavy use.

4. Decision Framework

Key Questions for Buyers:

  1. What is your primary use case for the smartphone? (Gaming, photography, basic use, etc.)
  2. How important is performance and responsiveness to you? (Smooth multitasking vs. basic functionality)
  3. What is your budget range? (Are you looking for value or are you willing to pay for premium features?)

Scenario-Based Recommendations:

  • Scenario 1: Gamers/Power Users
    • Recommendation: Samsung Galaxy S21+ 5G. The superior chipset, GPU, and display are vital for smooth gaming and demanding applications.
  • Scenario 2: Casual User on a Budget
    • Recommendation: Xiaomi Poco C40. Prioritizes budget and long battery life for simple day-to-day usage.
  • Scenario 3: Photography Enthusiast
    • Recommendation: Samsung Galaxy S21+ 5G. Provides better quality, versatility, and advanced features such as optical zoom, and RAW photos.
  • Scenario 4: Users who need long battery life and do not require heavy usage
    • Recommendation: Xiaomi Poco C40. Its large battery provides for extended usage on a single charge.

My Choice

If I were choosing between these two phones, I would pick the Samsung Galaxy S21+ 5G.

Here's why:

  • Performance is King: As someone who uses their phone for a variety of tasks from gaming to photography to productivity, the S21+'s chipset provides a much smoother, more responsive experience. The Poco C40 would feel slow for my use case.
  • Display Matters: I heavily consume media on my phone, and the S21+'s AMOLED screen with its high resolution, 120Hz refresh rate, and brightness is crucial for an enjoyable viewing experience. The Poco C40's screen would feel outdated and lacklustre.
  • Camera Versatility: Photography is important to me, and the S21+'s telephoto lens, higher resolution selfie camera, and 8K video capabilities are huge advantages. The Poco C40's camera system would severely limit my ability to take quality pictures.
  • Future Proofing: The S21+'s advanced connectivity features (Wi-Fi 6, advanced Bluetooth, eSIM) make it a more future-proof device. Additionally, the S21+ is likely to receive more software updates.

While I appreciate the Poco C40's larger battery and included charger, the overall performance, display, and camera advantages of the S21+ far outweigh these benefits. I would choose the Galaxy S21+ despite the lack of a charger and smaller battery in box. For me, the higher cost of the S21+ is justified by the better user experience and features it offers.

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.