Samsung Galaxy S21 Ultra 5G vs Xiaomi 14 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 14
Xiaomi 14
Xiaomi

General

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

Physical

Volume 111.09 cm³ 89.59 cm³
Screen Size to Weight Ratio 3 "/g 3.38 "/g
Weight 227 g 188 g
Height 165.1 mm 152.8 mm
Width 75.6 mm 71.5 mm
Thickness 8.9 mm 8.2 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Black
  • White
  • Pink
  • Jade Green

Display

Screen Size 6.8 " 6.36 "
Resolution 1440 x 3200 1200 x 2670
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 89.3 %
Pixel Density 515 PPI 460 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 1000 nits
HBM Brightness N/A N/A
Peak Brightness 1500 nits 3000 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 113.97 mAh/in²
Battery Density 45.01 mAh/cm³ 51.46 mAh/cm³
Battery Capacity 5000 mAh 4610 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Mali-G78 MP14 - International Adreno 750

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 15 18

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 Ultra 5G vs. Xiaomi 14

1. Specifications Comparison

FeatureSamsung Galaxy S21 Ultra 5GXiaomi 14Practical Impact
Design
Launch Date2021-01-292023-11-01Xiaomi 14 is a newer model with more up-to-date technology.
Size165.1 × 75.6 × 8.9 mm152.8 × 71.5 × 8.2 mmS21 Ultra is larger, potentially less comfortable for one-handed use; Xiaomi 14 is more compact.
Weight227g188gXiaomi 14 is significantly lighter, making it more comfortable for extended use.
Display
Size6.8"6.36"S21 Ultra offers a larger screen for immersive viewing; Xiaomi 14 is more pocketable.
Resolution1440x32001200x2670S21 Ultra has a noticeably sharper display with more detail.
PPI515460S21 Ultra offers finer detail and sharper visuals.
TechnologyAMOLEDOLEDBoth offer excellent contrast and vibrant colors.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animations.
Brightness1500 nits3000 nitsXiaomi 14 offers significantly better outdoor visibility in bright sunlight.
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 8 Gen 3 (4 nm)Xiaomi 14 uses a newer, more powerful and efficient chipset, resulting in significantly better performance.
AnTuTu Score749,0001,985,014Xiaomi 14 offers dramatically faster app loading, better multitasking, and is much better for gaming.
GPUMali-G78 MP14Adreno 750Xiaomi 14 has a significantly more powerful GPU for better graphics performance.
Battery
Capacity5000mAh4610mAhS21 Ultra has a slightly larger battery, potentially offering slightly longer battery life.
Charging25W fast charging90W fast chargingXiaomi 14 charges much faster, reducing downtime.
Charging Features15W Wireless, 9W Reverse50W Wireless, 10W Reverse, Pengpai G1/P2 chipsXiaomi 14 has significantly faster wireless charging.
Camera
Main Camera108MP f/1.8, 1/1.33", 0.8µm50MP f/1.6, 1/1.31", 1.20µmS21 Ultra has a higher resolution, but Xiaomi 14 has a wider aperture and larger pixels for potentially better low-light.
Telephoto/Portrait10.8MP f/2.4, 1/2.65", 1.22µm50MP f/2.0, 1/2.76", 0.64µmXiaomi 14 has a higher resolution and wider aperture, but smaller pixel size.
Selfie44MP f/2.2, 1/2.65", 0.70µm32MP, 1/3", 0.70µmS21 Ultra has a higher resolution and larger sensor.
Telephoto Lens10.8MP f/4.9NAS21 Ultra has a dedicated telephoto lens, offering further optical zoom capabilities.
Wide Angle LensNA50MP f/2.2, 1/2.76", 1.12µmXiaomi 14 has a dedicated ultrawide angle lens
Wide Angle + Macro12.2MP f/2.2NAS21 Ultra has a dedicated wide angle + macro lens
VideoUp to 8K 24fpsUp to 8K 24fpsBoth offer similar high-resolution video capabilities.
DXOMARK Mobile Score115138Xiaomi 14 has much better overall camera performance
DXOMARK Photo Score121137Xiaomi 14 has much better performance in photo tests
DXOMARK Video Score100138Xiaomi 14 has a much superior video performance
Software
OSAndroid 11 (up to 15)Android 14 (up to 18)Xiaomi 14 offers a newer OS with more features and longer software support.
Connectivity
WiFiWi-Fi 6Wi-Fi 7Xiaomi 14 offers faster and more reliable wireless connectivity with latest standard.
Bluetooth5.25.4Xiaomi 14 has a newer version offering potential efficiency and connectivity enhancements.
GPSGPS, Galileo, BeidouA-GPS, GLONASS, Beidou, Galileo, NavIC SystemXiaomi 14 offers better location accuracy using more satellite systems.
SIMDual SIM, Dual StandbyDual SIM, Dual StandbyBoth have dual SIM support.
Storage
Internal128/256/512 GB256/512/1024 GBXiaomi 14 provides more storage options, especially with its maximum 1TB option.
RAM12/16 GB8/12/16 GBBoth offer sufficient RAM for multitasking and gaming.
ExpandableNoNoNeither phone supports expandable storage.
Audio
QualityDolby Atmos, Hi-Res, Stereo SpeakersDolby Atmos, Hi-Res, Stereo Speakers, 4 MicrophonesXiaomi 14 has a slightly edge offering better audio recording capabilities.
Security
FeaturesBasic fingerprintBasic fingerprintBoth offer basic fingerprint sensor technology.
Build Quality
ProtectionGorilla Glass VictusGorilla Glass VictusBoth provide similar screen protection.
SensorsHall, Geomagnetic, Proximity, Accelerometer, Compass, Gyroscope, BarometerRGB, Proximity, Accelerometer, Compass, Gyroscope, BarometerBoth offer a comprehensive sensor suite for advanced functionality, with slight differences.
## 2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Larger Display: A 6.8" screen is great for media consumption and productivity.
  • Higher Display Resolution and PPI: Noticeably sharper and more detailed display visuals.
  • More versatile camera system: Includes dedicated telephoto lens and wide angle + macro lens, along with more telephoto zoom options.

Xiaomi 14 Advantages:

  • Newer and More Powerful Chipset: Snapdragon 8 Gen 3 offers substantially superior performance.
  • Significantly Higher AnTuTu Score: Much faster app loading, multitasking, and gaming experience.
  • Much Brighter Display: Superior outdoor visibility, especially in sunny conditions.
  • Faster Charging: Both wired and wireless charging is significantly faster, minimizing downtime.
  • Better camera performance: Higher DXOMark scores indicating better photo and video quality.
  • Newer Operating System: Comes with Android 14 and offers longer software support.
  • Faster WiFi: Wi-Fi 7 support for faster, more reliable wireless connectivity.
  • More storage options: Up to 1 TB of internal storage, compared to 512GB on S21 Ultra.
  • Better Audio Recording: 4 microphones

Trade-offs:

  • S21 Ultra: Larger size and weight for potentially superior video and photo capturing versatility, compared to the Xiaomi 14's improved performance, camera quality, and faster charging.
  • Xiaomi 14: Smaller screen for a more compact experience, sacrificing some screen real estate. The telephoto and macro lens versatility is sacrificed in favor of a higher quality primary lens.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G Ideal Users:

  • Media Enthusiasts: Those who prioritize a large, sharp display for watching movies and videos.
  • Photography Enthusiasts: Users who need the extra telephoto versatility.
  • Multitaskers: Prefer to work on their phone with multiple apps open.

Specific Use Cases for S21 Ultra:

  • Watching movies or editing photos on a large, detailed screen.
  • Taking photos in diverse situations utilizing the several zoom options.
  • Multitasking with various apps and documents open simultaneously.

Xiaomi 14 Ideal Users:

  • Performance Seekers: Gamers and users who need the fastest possible performance.
  • On-the-Go Professionals: Users who prioritize fast charging and reliable connectivity.
  • Mobile Photographers: Those who prioritize high quality images and video.
  • Compact Phone Fans: Users who prefer a more pocketable and lighter device.

Specific Use Cases for Xiaomi 14:

  • Playing graphic-intensive games smoothly without lag.
  • Taking high-quality videos and photos.
  • Working remotely, requiring fast charging and robust performance.
  • Comfortable day to day use

Price-to-Value:

  • The Xiaomi 14 offers a much better price-to-value ratio, due to the better hardware and camera performance. S21 Ultra is an older device, and can be found at lower price points as well, but users will need to be aware of the older chipset.

4. Decision Framework

Key Questions for Buyers:

  1. Do you prioritize a larger display, or a more compact form factor?
  2. Is raw performance or camera quality more important to you?
  3. How much do you value fast charging?

Scenario-Based Recommendations:

  • Scenario 1: Heavy Gaming, High Performance - If you are a gamer, choose the Xiaomi 14. Its newer chipset and significantly higher performance will provide a smoother gaming experience.
  • Scenario 2: Extensive Media Consumption - If a large, sharp display is most important for watching movies, choose the Samsung S21 Ultra.
  • Scenario 3: Photo Enthusiast - If you want the most versatile camera system with additional zoom options, then the S21 Ultra is better. Otherwise, the Xiaomi 14 performs better and is the better overall option.
  • Scenario 4: Day to Day Usage - If you want a reliable and very performant phone that takes good photos, can charge quickly and doesn't require too much storage space, the Xiaomi 14 is the better overall option.

My Choice and Why

If I were choosing between these two phones, I would choose the Xiaomi 14.

Here's why:

  • Performance: The Snapdragon 8 Gen 3 is a major leap over the Exynos 2100. The Xiaomi 14's superior performance in benchmarks translates directly into a smoother, faster experience for everyday use, and especially for more demanding tasks like gaming.
  • Camera Quality: While the S21 Ultra offers additional lens choices and more zoom options, the Xiaomi 14 offers a significantly better overall camera system, especially in video.
  • Charging Speed: The 90W charging on the Xiaomi 14 is a massive advantage. I value the ability to rapidly charge the phone, as I'm often on the go and don't want to be tethered to a charger for long.
  • Newer Technology: The Xiaomi 14's newer display technology, more up to date software support, and connectivity features make it a more future-proof device.
  • Practicality: As a mobile professional, the compact size and light weight of the Xiaomi 14 would be a significantly advantage.

Although the S21 Ultra has the bigger, sharper display, the difference is not enough to outweigh the performance, charging speeds, and camera quality offered by the Xiaomi 14. I find the Xiaomi 14 to be the superior overall package for my needs.

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.