Samsung Galaxy S21 Ultra 5G vs Xiaomi Poco F5 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 May 1, 2023
Release Year 2021 2023

Physical

Volume 111.09 cm³ 105.57 cm³
Screen Size to Weight Ratio 3 "/g 3.27 "/g
Weight 227 g 204 g
Height 165.1 mm 162.8 mm
Width 75.6 mm 75.4 mm
Thickness 8.9 mm 8.6 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Black
  • White

Display

Screen Size 6.8 " 6.67 "
Resolution 1440 x 3200 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 87.5 %
Pixel Density 515 PPI 526 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 500 nits
HBM Brightness N/A 1000 nits
Peak Brightness 1500 nits 1400 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 115.98 mAh/in²
Battery Density 45.01 mAh/cm³ 48.88 mAh/cm³
Battery Capacity 5000 mAh 5160 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.0 GHz Cortex-X2 & 3x2.5 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Mali-G78 MP14 - International Adreno 730

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 15

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 Ultra 5G vs. Xiaomi Poco F5 Pro

1. Specifications Comparison

Here's a detailed comparison of key specifications for both phones, focusing on their practical implications:

FeatureSamsung Galaxy S21 Ultra 5GXiaomi Poco F5 ProPractical Impact
Design
Dimensions165.1 x 75.6 x 8.9 mm162.8 x 75.4 x 8.6 mmS21 Ultra is slightly taller and thicker; Poco F5 Pro is more compact and may feel more comfortable to hold.
Weight227g204gPoco F5 Pro is significantly lighter, improving comfort during extended use.
Display
Size6.8"6.67"S21 Ultra offers slightly more screen real estate; Poco F5 Pro is a bit more compact.
Resolution1440x32001440x3200Both offer very sharp displays with the same level of detail.
Pixel Density515 PPI526 PPIBoth have very high pixel density, resulting in sharp, clear images. Negligible difference.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors, deep blacks, and excellent contrast.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations.
Brightness1500 nits1400 nitsS21 Ultra is slightly better for outdoor visibility in bright sunlight.
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 8+ Gen 1 (4 nm)Snapdragon 8+ Gen 1 offers significantly better performance and efficiency, leading to faster app loading and better gaming.
AnTuTu Score749,0001,317,798Poco F5 Pro delivers noticeably superior performance in demanding tasks.
GPUMali-G78 MP14Adreno 730Adreno 730 in the Poco F5 Pro is a more powerful GPU for gaming.
Battery
Capacity5000mAh5160mAhBoth offer similar battery life, comfortably lasting a full day for most users.
Charging25W Fast Charging67W Fast ChargingPoco F5 Pro charges significantly faster, reducing downtime.
Charging Features15W Wireless, 9W Reverse30W WirelessPoco F5 Pro has faster wireless charging, S21 Ultra offers the flexibility of reverse wireless charging.
Camera
Main Camera108MP f/1.8, 1/1.33"64MP f/1.79, 1/2"S21 Ultra has higher resolution and a larger sensor, typically capturing more detailed images, especially in low light.
Telephoto10.8MP (2x), 10.8MP (10x)NoneS21 Ultra offers more versatile zoom capabilities.
Wide Angle + Macro12.2MPNoneS21 Ultra offers a dedicated wide angle camera with macro functionality
Wide AngleNone8MP f/2.2Poco F5 Pro offers an ultrawide perspective.
MacroNone2MP f/2.4Poco F5 Pro allows capturing close-up details.
Selfie Camera44MP f/2.2, 1/2.65"16MP f/2.45, 1/3.06"S21 Ultra offers higher resolution and wider aperture selfie camera.
VideoUp to 8K@24fpsUp to 8K@24fpsBoth offer similar high-resolution video capabilities, with stabilization. Poco F5 Pro has faster slow motion.
DXOMark Mobile Score115N/AS21 Ultra has a solid DxOMark Mobile Score, meaning good overall camera performance. Poco F5 Pro has not been tested.
DXOMark Selfie Score135N/AS21 Ultra has a solid DxOMark Selfie Score, meaning good overall selfie camera performance. Poco F5 Pro has not been tested.
Software
OSAndroid 11 (Upgradable to 15)Android 13Poco F5 Pro ships with a more recent Android version out of the box.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 6Both offer high-speed Wi-Fi connectivity.
Bluetooth5.25.3Poco F5 Pro has a newer Bluetooth version with slightly better efficiency and features.
GPSGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), Galileo (E1+E5a)A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), QZSS (L1 + L5)Xiaomi Poco F5 Pro supports more satellite systems for better location accuracy.
Storage
Internal128/256/512 GB256/512 GBBoth offer ample storage options; S21 Ultra has an entry-level 128GB option.
RAM12/16 GB8/12 GBS21 Ultra offers up to 16GB of RAM, enabling even smoother multitasking.
ExpandableNoNoNeither phone supports expandable storage.
Audio
Audio QualityDolby Atmos, Hi-Res Audio, Noise cancellation microphone, Stereo SpeakersDolby Atmos, Hi-Res Audio, Stereo SpeakersBoth have good audio quality but S21 Ultra has additional noise cancellation.
Security
FeaturesFingerprint sensorFingerprint sensorBoth offer basic fingerprint unlock.
Build Quality
Screen ProtectionCorning Gorilla Glass VictusCorning Gorilla Glass 5S21 Ultra has the newer, tougher Gorilla Glass Victus for better screen protection.
Sensors
SensorsBiometric: Fingerprint; Proximity: Proximity; Motion: Accelerometer, Compass, Gyroscope; Environmental: BarometerBiometric: Fingerprint; Proximity: Proximity; Motion: Accelerometer, Compass, GyroscopeS21 Ultra has an additional barometer for weather tracking.
## 2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • More Versatile Camera System: Offers multiple telephoto lenses for greater zoom capabilities, a dedicated wide angle + macro lens and higher resolution on the main and selfie cameras.
  • Higher Screen Brightness: 1500 nits provides better outdoor visibility, a slight edge in bright conditions.
  • Reverse Wireless Charging: The ability to charge other devices wirelessly using the phone is a convenient extra.
  • Advanced Sensors: Offers a barometer sensor for weather tracking.
  • Better Screen Protection: Uses Corning Gorilla Glass Victus for better screen durability.
  • Better Selfie Camera Has a higher resolution and wider aperture selfie camera with a larger sensor.

Xiaomi Poco F5 Pro Advantages:

  • Significantly Superior Performance: Snapdragon 8+ Gen 1 chipset offers much better processing power, resulting in faster app loading and better gaming experience.
  • Much Faster Charging: 67W fast charging dramatically reduces charging times compared to 25W on the S21 Ultra.
  • Newer Android Version: Ships with Android 13, providing a more up-to-date software experience.
  • Newer Bluetooth Version: Bluetooth 5.3 for better connectivity efficiency.
  • Lighter Weight: 23g lighter which may improve comfort during prolonged use.
  • Wider Aperture on Main Camera: Slightly wider f/1.79 aperture on the main camera may help capture slightly more light for better low-light performance.
  • Ultrawide and Macro Lens: Offers a dedicated ultrawide and macro lens for more shooting flexibility.
  • Faster Slow-Motion: Offers a higher slow-motion framerate of 1920fps compared to the S21 Ultra's 960fps.

Trade-offs:

  • Samsung Galaxy S21 Ultra 5G: Sacrifices raw performance and charging speed for a more versatile camera system, a brighter display and a few additional features.
  • Xiaomi Poco F5 Pro: Prioritizes performance and charging speed, but with a less versatile camera system and lower screen brightness.

3. User Profiles & Recommendations

Ideal User for Samsung Galaxy S21 Ultra 5G:

  • Photography Enthusiasts: Users who prioritize versatile camera capabilities, especially zoom, and require excellent image quality in various conditions, including low light and portraiture.
  • Users Who Need a Brighter Display: Those who often use their phone outdoors in bright sunlight and need maximum screen visibility.
  • Users Who Value Extra Features: Users that want features like reverse wireless charging, more advanced sensors, and a better selfie camera.
  • Users who Want a Comprehensive Camera System: Those that want a comprehensive camera system with many focal lenghts.

Ideal User for Xiaomi Poco F5 Pro:

  • Gamers and Power Users: Users who demand top-tier performance for gaming and other demanding tasks, and appreciate fast charging speeds.
  • Users Who Want the Latest Software: Those that want the most recent Android version.
  • Users Who Need All-Day Battery with Fast Charging: Those that want a phone that can get through a full day with the ability to recharge quickly.
  • Budget-Conscious Users: Those seeking the best performance possible for the price.

Use Cases:

  • Samsung Galaxy S21 Ultra 5G: Ideal for detailed photography, zooming in on distant objects, capturing various perspectives using the different lenses, and using the phone in direct sunlight. Suitable for users who value a feature-rich experience with top camera quality.
  • Xiaomi Poco F5 Pro: Excels in heavy gaming, resource-intensive apps, multitasking, and situations where fast charging is a must. A good option for power users who prioritize speed and efficiency.

4. Decision Framework

Here are three key questions to help buyers decide:

  1. What is your primary use case? (Photography, gaming, everyday use, etc.)
  2. How important is fast charging and performance? (Do you prioritize quick refills and raw power?)
  3. How important is having a versatile and feature-rich camera system? (Do you need a wide range of zoom options and dedicated macro/ultrawide lenses?)

Scenario-Based Recommendations:

  • If you are a photography enthusiast who values a complete camera system with optical zoom: The Samsung Galaxy S21 Ultra 5G is the better choice.
  • If you are a gamer or a power user looking for maximum performance and fast charging: The Xiaomi Poco F5 Pro is the recommended option.
  • If you want a good balance of features, performance and cost: The Xiaomi Poco F5 Pro provides a better price-to-performance ratio.

My Choice

Personally, I would choose the Xiaomi Poco F5 Pro.

Here's why:

While the S21 Ultra has a more versatile camera system, the performance difference between the two devices is too substantial to ignore. The Snapdragon 8+ Gen 1 in the Poco F5 Pro offers a significant leap in speed, making it a far more enjoyable device for everyday tasks, gaming, and demanding applications. The drastically faster charging is also a major advantage, ensuring that the phone is never out of commission for long. Additionally, the Poco F5 Pro ships with a more recent version of Android which I would prefer.

While I appreciate the S21 Ultra's camera capabilities, particularly the versatile zoom system, I believe the Poco F5 Pro provides a more well-rounded experience for my needs. For me, a fluid and responsive user experience with faster charging outweighs the benefits of a more robust camera system and the few additional features found on the S21 Ultra. Additionally, the price-to-performance ratio of the Xiaomi Poco F5 Pro is more compelling.

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.