Samsung Galaxy S21 5G vs Xiaomi Poco M5s - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 6, 2022
Release Year 2021 2022

Physical

Volume 85.33 cm³ 99.25 cm³
Screen Size to Weight Ratio 3.67 "/g 3.6 "/g
Weight 169 g 178.8 g
Height 151.7 mm 160.5 mm
Width 71.2 mm 74.5 mm
Thickness 7.9 mm 8.3 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Blue
  • White
  • Gray

Display

Screen Size 6.2 " 6.43 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 83.5 %
Pixel Density 421 PPI 409 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A 450 nits
HBM Brightness N/A 700 nits
Peak Brightness 1300 nits 1100 nits

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 120.93 mAh/in²
Battery Density 46.88 mAh/cm³ 50.38 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek MT6785V/CD Helio G95 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G76 MC4

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 12
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GXiaomi Poco M5sPractical Impact
Design
Dimensions151.7 × 71.2 × 7.9 mm160.5 × 74.5 × 8.3 mmS21 is more compact, M5s is larger, might affect one-handed use and pocketability
Weight169g178.8gS21 is lighter, better for prolonged use
Display
Size6.2"6.43"M5s has slightly more screen real estate for media consumption, gaming.
Resolution1080x24001080x2400Both are Full HD+, very similar sharpness.
PPI421409Similar pixel density, meaning both offer very sharp images, not noticeably different in daily use
TechnologyAMOLEDAMOLEDBoth offer vibrant colors, deep blacks, and good contrast, great for content consumption.
Refresh Rate120Hz60HzS21 offers smoother scrolling and animations. Noticeable in gaming and UI navigation
Brightness1300 nits1100 nitsS21 is easier to view in direct sunlight.
Performance
ChipsetExynos 2100 (5 nm)Helio G95 (12 nm)S21 offers significantly faster performance, better for gaming, demanding apps, and multitasking.
AnTuTu Score749,100418,627S21 provides noticeably snappier app loading, smoother transitions, and overall more responsive user experience than the M5s.
GPUMali-G78 MP14Mali-G76 MC4S21 offers superior graphics for gaming and demanding apps.
Battery
Capacity4000mAh5000mAhM5s is likely to offer longer battery life.
Charging25W Fast Charging33W Fast ChargingM5s charges slightly faster, reducing wait time.
Charging FeaturesWireless charging 15WNoneS21 offers convenient wireless charging options.
Camera
Main Camera Res12MP64MPM5s captures more detail in good lighting conditions but the S21 has a larger sensor and more advanced image processing.
Main Sensor Size1/1.76"1/2"S21's sensor size captures more light which translates to better low light performance than the M5s.
Main Camera Aperturef/1.8f/1.9S21 captures slightly more light due to wider aperture, improving low-light performance.
TelephotoYesNoS21 offers better zoom capabilities.
Wide AngleYesYesBoth offer wide-angle photos (although S21 calls it "wide angle + macro")
Macro LensNoYesM5s has a dedicated macro lens for close-up shots
Selfie Camera Res10MP13MPM5s captures slightly more detail in selfies, however aperture is smaller and sensor size is also slightly smaller.
Video RecordingUp to 8K@24fpsUp to 4K@30fpsS21 offers higher resolution video recording, suitable for professional use, while M5s is good for standard video.
DxOMark ScoresMobile: 111 Selfie: 132Not AvailableS21 demonstrates superior overall image quality as it has DxOMark scores while M5s doesn't.
Software
OSAndroid 11 (upgradable to 15)Android 12M5s has a newer OS out of the box, but S21 has guaranteed OS updates to 15.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)802.11acS21 supports faster Wi-Fi speeds and less latency
BluetoothBluetooth 5.0 LEBluetooth 5.0 LEBoth have similar Bluetooth capability but S21 has more extensive features
GPSGPS (L1+L5), Galileo (E1+E5a)GPSS21 offers more accurate location tracking.
Storage
Internal Storage128GB or 256GB64GB, 128GB or 256GBBoth offer similar storage options, but the M5s also comes in 64GB config.
RAM8GB4GB, 6GB, or 8GBS21 has 8GB RAM, M5s can have less, or 8GB. Higher RAM is better for multitasking.
Expandable StorageNoNoBoth phones lack expandable storage options.
Audio
QualityDolby Atmos, Noise CancellationHi-Res AudioBoth offer good audio experience with stereo speakers, S21 has better spatial audio and clear calls while M5s provides higher audio resolution.
Security
FeaturesBasic Fingerprint sensorSide-mounted Fingerprint sensorM5s provides more advanced security with its side-mounted sensor.
Build Quality
Screen ProtectionGorilla Glass VictusGorilla Glass 3S21 provides better protection against drops and scratches.
Sensors
FeaturesBarometerUltrasonic Proximity SensorS21 offers more advanced sensors, including barometer, whereas M5s has an ultrasonic proximity sensor.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • Superior Performance: The Exynos 2100 chipset and Mali-G78 MP14 GPU offer significantly faster performance, smoother multitasking, and better gaming capabilities compared to the Helio G95.
  • Better Display: The 120Hz refresh rate and higher peak brightness provide a smoother, more vibrant visual experience, especially noticeable when browsing, gaming, and in outdoor conditions.
  • Advanced Camera System: While the main camera has a lower resolution, its larger sensor, wider aperture, and additional telephoto lens offer better image quality in low light, enhanced zoom capabilities, and overall more versatile photography. The 8K video recording adds a powerful video recording option.
  • Premium Features: Wireless charging, reverse wireless charging, and superior build quality (Gorilla Glass Victus) contribute to a more premium user experience.
  • Future Proofing: Guaranteed OS updates to Android 15 ensure the S21 will be supported longer than the M5s.

Xiaomi Poco M5s Advantages:

  • Larger Battery: The 5000mAh battery offers significantly better battery life, ideal for users who need their phone to last a full day or more without needing to charge.
  • Faster Charging: The 33W fast charging is slightly faster than the S21's 25W, reducing charging times.
  • Dedicated Macro Lens: Provides users the ability to take detailed close-up shots.
  • Newer Android out of the box: Comes with Android 12, while S21 comes with Android 11.
  • Potentially Lower Price: Typically, Xiaomi phones are more budget-friendly. (Note: Actual market prices were not provided).

Significant Trade-offs:

  • S21: The smaller battery and higher power draw of the flagship chipset may result in shorter battery life compared to the M5s.
  • M5s: The performance is noticeably lower than the S21, especially for demanding tasks, and camera quality is a step below, notably lacking the telephoto lens.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G Ideal Users:

  • Performance Users: Gamers, power users, and anyone who requires fast, smooth performance for demanding apps and multitasking.
  • Photography Enthusiasts: Users who prioritize image quality, especially in low light, and want versatile zoom capabilities and higher resolution video recording.
  • Tech Enthusiasts: Those who value premium features like wireless charging and a high-quality display with a smooth refresh rate.
  • Users Needing Future Support: Users who want software updates for a longer period.

Use Cases for Galaxy S21 5G:

  • Playing graphically intensive games.
  • Editing photos and videos.
  • Capturing high-quality photos and videos in various lighting conditions.
  • Power user multitasking.
  • Long-term usage with continuous software updates.

Xiaomi Poco M5s Ideal Users:

  • Budget-Conscious Users: Users who want a reliable smartphone at a lower price point.
  • Battery Life Prioritizers: Those who need a phone that can easily last a full day or more without needing to recharge.
  • Casual Users: Users who mainly browse the web, use social media, and don't need top-tier performance.
  • Users that value newer OS features: Users who prefer a phone with the newer Android OS out of the box.

Use Cases for Xiaomi Poco M5s:

  • Extended battery life for all-day use.
  • Capturing casual photos and videos.
  • Web browsing and social media use.
  • Watching streaming content.
  • Users who prioritize newer software.

Price-to-Value Ratio:

  • The Galaxy S21 5G offers flagship performance and features at a premium price.
  • The Poco M5s offers a good balance of features and battery life at a lower price point. (Note: Actual pricing not provided).

4. Decision Framework

Key Questions for Buyers:

  1. How important is performance for your daily use? (Heavy gaming or light browsing?)
  2. Do you value camera quality or battery life more? (High-quality photos or all-day use?)
  3. Is a premium display with a high refresh rate important to your experience? (Smooth scrolling or average display?)

Scenario-Based Recommendations:

  • Scenario 1: Heavy Gamer: Choose the Samsung Galaxy S21 5G due to its superior chipset, GPU, and 120Hz display.
  • Scenario 2: All-Day Battery Life User: Choose the Xiaomi Poco M5s because of its larger battery capacity.
  • Scenario 3: Social Media & Photography User: The Samsung Galaxy S21 5G will provide more impressive photo quality and versatile cameras.
  • Scenario 4: Budget-Conscious Shopper: The Xiaomi Poco M5s offers good value for the price with a large battery.

My Choice

If I were choosing between these two phones, I would personally pick the Samsung Galaxy S21 5G. While the Xiaomi Poco M5s has its merits, particularly in battery life, my primary use cases involve more performance-intensive tasks, photography, and overall a smoother user experience.

Here's why:

  • Performance Matters: As someone who uses their phone for gaming, multitasking, and running various applications, the Exynos 2100 chipset in the S21 would significantly improve my daily experience compared to the Helio G95 in the M5s. The substantial difference in benchmark scores and real-world performance will be noticeable.
  • Display Quality: I highly value a high refresh rate display for a smoother visual experience. The S21's 120Hz AMOLED display would be a significant upgrade, especially for gaming and scrolling through content. The higher brightness also makes a difference for outdoor use.
  • Camera Versatility: While the M5s boasts a 64MP main sensor, the S21 offers more practical versatility with its telephoto lens. It also offers higher quality photos in low light due to the better sensor. The 8k video option is another reason for choosing the S21.
  • Premium Features: I find the wireless charging and better build quality to be valuable, especially Gorilla Glass Victus. These features create a more premium experience.
  • Software Support: Given that the S21 is receiving OS updates to Android 15, this also adds to its value in terms of device longevity.

The M5s battery life is a great strength but in my personal use cases, the S21 provides more significant improvements. I am more willing to compromise on battery for premium features and performance. I prefer a more responsive, enjoyable experience even if it means charging more often. This makes the S21 a better fit for my needs, despite the fact that I prefer a larger display.

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.