Samsung Galaxy S21 Ultra 5G vs Motorola Moto G55 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 6, 2024
Release Year 2021 2024

Physical

Volume 111.09 cm³ 96.6 cm³
Screen Size to Weight Ratio 3 "/g 3.63 "/g
Weight 227 g 179 g
Height 165.1 mm 161.6 mm
Width 75.6 mm 73.8 mm
Thickness 8.9 mm 8.1 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Forest Grey
  • Smoky Green
  • Twilight Purple

Display

Screen Size 6.8 " 6.49 "
Resolution 1440 x 3200 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 85.3 %
Pixel Density 515 PPI 405 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits N/A

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 118.71 mAh/in²
Battery Density 45.01 mAh/cm³ 51.76 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 7025 (6 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.5 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU Mali-G78 MP14 - International IMG BXM-8-256

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 14
Maximum OS Version 15

Comparison Summary

Smartphone Comparison: Samsung Galaxy S21 Ultra 5G vs. Motorola Moto G55

1. Specifications Comparison

Here's a detailed comparison of the key specifications for both smartphones:

Design

FeatureSamsung Galaxy S21 Ultra 5GMotorola Moto G55Practical Impact
Dimensions165.1 × 75.6 × 8.9 mm161.6 × 73.8 × 8.1 mmS21 Ultra is larger, potentially less comfortable for one-handed use. G55 is more compact and pocketable.
Weight227g179gG55 is significantly lighter, easier to hold for extended periods. S21 Ultra feels more substantial, but is heavier.

Display

FeatureSamsung Galaxy S21 Ultra 5GMotorola Moto G55Practical Impact
Size6.8"6.49"S21 Ultra offers more screen real estate for media consumption and multitasking.
Resolution1440x32001080x2400S21 Ultra has a significantly sharper display with more detail and clarity.
Pixel Density (PPI)515405S21 Ultra's display appears crisper and smoother.
TechnologyAMOLEDIPS LCDS21 Ultra has richer colors, deeper blacks, and superior contrast. Better for HDR content and dark mode.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1500 nits0 nitsS21 Ultra's higher brightness is far superior for outdoor visibility in bright sunlight.

Performance

FeatureSamsung Galaxy S21 Ultra 5GMotorola Moto G55Practical Impact
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 7025 (6 nm)S21 Ultra's chip offers faster processing, better graphics, and more efficient multitasking.
AnTuTu Score749,000470,000S21 Ultra provides a significantly faster and smoother overall experience, especially for gaming and intensive tasks.
GPUMali-G78 MP14IMG BXM-8-256S21 Ultra provides better graphics performance for gaming and video editing.

Camera

FeatureSamsung Galaxy S21 Ultra 5GMotorola Moto G55Practical Impact
Main Camera Resolution108MP50MPS21 Ultra captures more detailed images, with better low-light performance due to larger sensor and pixel size.
Telephoto + Portrait LensYes (10.8MP)NoS21 Ultra has dedicated zoom capabilities for portrait shots and zooming on distant objects.
Selfie Camera Resolution44MP16MPS21 Ultra takes higher resolution selfies with better details
Telephoto LensYes (10.8MP)NoS21 Ultra offers better zoom capabilities
Wide Angle LensNoYes (8MP)Moto G55 offers ultra wide photography
Wide Angle + Macro LensYes (12.2MP)NoS21 Ultra is capable of shooting Macro and ultrawide photos
Video RecordingUp to 8K@24fpsUp to 1080p@60fpsS21 Ultra records much higher quality video with more advanced features.
DXOMark ScoreMobile: 115, Selfie: 135N/AS21 Ultra offers superior picture quality, color reproduction and overall camera performance
Camera Features8K, Optical Zoom, Quadruple Camera, Laser AFUltra stable video, Dual Camera, Front FlashS21 Ultra has more versatile and advanced features for professional-grade photography, while G55 provides front flash.

Battery

FeatureSamsung Galaxy S21 Ultra 5GMotorola Moto G55Practical Impact
Capacity5000mAh5000mAhSimilar battery capacity, expected similar battery life for moderate usage.
Charging25W Fast Charging30W Fast ChargingG55 charges slightly faster than the S21 Ultra.
FeaturesWireless charging, Reverse wireless chargingReverse chargingS21 Ultra offers more charging flexibility with wireless and reverse wireless options.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Significantly sharper, more vibrant AMOLED display with higher brightness, ideal for media consumption and outdoor use.
  • Higher Performance: More powerful processor and GPU for smoother multitasking, gaming, and demanding applications.
  • Advanced Camera System: More versatile camera system with higher resolution, optical zoom, and 8K video recording, suitable for photography enthusiasts.
  • Wireless Charging: Convenient wireless charging and reverse wireless charging for other devices.
  • Premium Features: Includes Hi-Res Audio, and better screen protection.

Motorola Moto G55 Advantages:

  • Lighter and More Compact: Easier to handle and carry for everyday use, more comfortable for one-handed use.
  • Faster Charging: Slightly faster charging speed compared to the Samsung.
  • Newer Software: Comes with a newer Android version out of the box.
  • eSIM Support: Supports eSIM technology for digital carrier switching
  • Front Flash: Offers better low light selfie capturing
  • Affordable Price: Typically priced lower than the S21 Ultra, offering a good value for its specifications

Trade-offs:

  • S21 Ultra is bulkier, heavier and more expensive, but has the better screen and camera performance.
  • Moto G55 has a more basic camera system and performance, however its much lighter and more affordable.

3. User Profiles & Recommendations

  • Samsung Galaxy S21 Ultra 5G:
    • Ideal User: Tech enthusiasts, photography lovers, power users, gamers, those who prioritize a high-quality display and top-tier performance.
    • Use Cases:
      • Professional photography and videography.
      • Mobile gaming with high frame rates and graphics.
      • Media consumption, including HDR content.
      • Heavy multitasking and productivity.
  • Motorola Moto G55:
    • Ideal User: Budget-conscious users, those seeking a reliable everyday phone, general consumers who prioritize affordability and portability.
    • Use Cases:
      • Everyday tasks: calls, messaging, browsing.
      • Social media and light photography.
      • Users needing a lightweight and pocketable phone.
      • Users that prioritize battery life and fast charging over top-tier performance.

4. Decision Framework

Consider these key questions before making a decision:

  1. What is your budget? The S21 Ultra is likely more expensive than the Moto G55.
  2. How important is camera quality to you? If photography is a high priority, the S21 Ultra has much more to offer.
  3. Do you prefer a larger screen and top-tier performance, or a lighter more compact phone that is more affordable?

Scenario-Based Recommendations:

  • For the High-End User: If you prioritize the best possible display, camera, and performance, and are willing to pay a premium, the Samsung Galaxy S21 Ultra 5G is the superior choice.
  • For the Budget-Conscious User: If you need a reliable phone for daily tasks and want to save money, the Motorola Moto G55 offers a great value proposition, with faster charging and a modern software experience.
  • For the Casual User: If you want a phone that is comfortable to use, that can capture basic shots, and can handle social media, the Motorola Moto G55 is a great pick.

My Choice

If I had to choose between these two phones, I would choose the Samsung Galaxy S21 Ultra 5G.

Reasons:

  • Superior Display: As someone who consumes a lot of media, the vibrant AMOLED screen, higher resolution, and brighter display are a major advantage.
  • Camera Versatility: I like photography and the advanced camera system with its optical zoom and 8K video recording capabilities are very appealing.
  • Performance: The higher performance will ensure a smooth and enjoyable experience for all of my use cases, from browsing to gaming.

Despite the higher price point and slightly heavier build, the Samsung Galaxy S21 Ultra 5G offers a more compelling package for my needs. However, if budget is a primary concern, the Motorola Moto G55 presents an excellent value proposition for most users.

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.