Samsung Galaxy S21 Ultra 5G vs Nothing Phone (2a) - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 March 12, 2024
Release Year 2021 2024

Physical

Volume 111.09 cm³ 106.1 cm³
Screen Size to Weight Ratio 3 "/g 3.53 "/g
Weight 227 g 190 g
Height 165.1 mm 161.7 mm
Width 75.6 mm 76.3 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
  • Blue
  • White
  • Milk

Display

Screen Size 6.8 " 6.7 "
Resolution 1440 x 3200 1080 x 2412
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 87.6 %
Pixel Density 515 PPI 394 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A 700 nits
HBM Brightness N/A 1100 nits
Peak Brightness 1500 nits 1300 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 111.38 mAh/in²
Battery Density 45.01 mAh/cm³ 47.12 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Mediatek Dimensity 7200 Pro (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.8 GHz Cortex-A715 & 6x 2.0 Cortex-A510)
GPU Mali-G78 MP14 - International Mali-G610 MC4

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 14
Maximum OS Version 15 17

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 Ultra 5GNothing Phone (2a)Practical Impact
Dimensions165.1 × 75.6 × 8.9 mm161.7 × 76.3 × 8.6 mmS21 Ultra is taller and thicker, potentially feeling less ergonomic. Nothing Phone (2a) is slightly wider.
Weight227g190gNothing Phone (2a) is significantly lighter, leading to greater comfort during extended use.

Display

FeatureSamsung Galaxy S21 Ultra 5GNothing Phone (2a)Practical Impact
Size6.8"6.7"Negligible difference in screen size; both feel similar in hand.
Resolution1440 x 32001080 x 2412S21 Ultra has a sharper display; text and images will appear clearer with more detail.
PPI515394S21 Ultra's higher pixel density translates to a noticeably sharper, more detailed image.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors, deep blacks and excellent contrast.
Refresh Rate120Hz120HzBoth provide smooth scrolling and animation.
Brightness1500 nits1300 nitsS21 Ultra will be more visible in direct sunlight due to higher peak brightness.

Performance

FeatureSamsung Galaxy S21 Ultra 5GNothing Phone (2a)Practical Impact
ChipsetExynos 2100 (5 nm)Mediatek Dimensity 7200 Pro (4 nm)Different chipsets; Exynos 2100 is older but provides slightly more performance, while Dimensity 7200 Pro is newer and more power efficient.
AnTuTu Score749,000688,952S21 Ultra demonstrates slightly better benchmark performance. Real-world differences will likely be subtle.
GPUMali-G78 MP14Mali-G610 MC4S21 Ultra has a more powerful GPU for graphically intensive tasks.

Camera

FeatureSamsung Galaxy S21 Ultra 5GNothing Phone (2a)Practical Impact
Standard Camera108MP, f/1.8, 1/1.33"50MP, f/1.88, 1/1.56"S21 Ultra has a higher resolution sensor and slightly wider aperture for better detail and low-light performance.
Telephoto + Portrait10.8MP, f/2.4, 1/2.65"N/AS21 Ultra offers dedicated telephoto zoom for portrait photography, which Nothing Phone (2a) lacks
Selfie44MP, f/2.2, 1/2.65"32MP, f/2.2, 1/2.74"S21 Ultra takes higher-resolution selfies with a slightly larger sensor, potentially capturing more details.
Telephoto Lens10.8MP, f/4.9, 1/2.65"N/AS21 Ultra has dedicated telephoto zoom capability that allows much higher magnification than digital zoom, while nothing phone (2a) does not have optical zoom.
Wide Angle + Macro12.2MP, f/2.2, 1/2.55"50MP, f/2.2, 1/2.76"Nothing phone (2a) has a higher resolution for its wide-angle, but S21 Ultra has a larger sensor for better light gathering.
Video8K@24fps, 4K@60fps4K@30fpsS21 Ultra allows higher resolution video recording and a higher fps at 4k resolution
DxoMark (Mobile)115 (Overall)N/AS21 Ultra has a tested camera and it demonstrates better photos and videos than most phones
DxoMark (Selfie)135 (Overall)N/AS21 Ultra has a tested selfie camera and it demonstrates better photos and videos than most phones
Camera FeaturesQuadruple Camera, Optical ZoomDual CameraS21 Ultra has more camera lenses and optical zoom for more shooting flexibility. Nothing Phone (2a) has a simpler dual-camera system.

Battery

FeatureSamsung Galaxy S21 Ultra 5GNothing Phone (2a)Practical Impact
Capacity5000mAh5000mAhBoth phones offer similar battery capacity.
Charging25W45WNothing Phone (2a) charges faster than S21 Ultra.
FeaturesWireless charging, reverse wireless chargingNoneS21 Ultra offers wireless and reverse wireless charging, which Nothing Phone (2a) does not.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Higher resolution and pixel density lead to a noticeably sharper and more detailed visual experience.
  • More Versatile Camera System: Multiple dedicated lenses offer greater flexibility, especially with telephoto zoom. Offers 8K recording capabilities.
  • Wireless Charging: Includes wireless and reverse wireless charging, offering more convenience.
  • Higher Benchmarks: Although its an older chipset, the phone offers slightly better benchmark performance.
  • Better Audio: Offers Dolby Atmos, Noise cancellation microphone.
  • More RAM: Comes in 16GB variants, which will be optimal for heavy multitasking.
  • More Internal Storage: Comes in a 512GB variant, which is useful for people who need to store large amounts of data on their phone.
  • Better Screen Protection: Gorilla Glass Victus offers superior screen protection compared to Gorilla Glass 5

Nothing Phone (2a) Advantages:

  • Lighter Design: Significantly lighter weight makes it more comfortable to hold and use for extended periods.
  • Faster Charging: 45W fast charging allows for quick battery top-ups.
  • Newer Operating System: Ships with Android 14, meaning more potential OS upgrades
  • Newer Bluetooth Version: The phone offers a newer bluetooth version.
  • More Navigation Systems: Supports more navigation systems, which leads to better accuracy.
  • Lower Price: The Nothing Phone (2a) is usually sold for a lower price than the Samsung Galaxy S21 Ultra

Trade-offs:

  • S21 Ultra trades a more bulky design for a more complete, premium experience with better display, camera and charging features.
  • Nothing Phone (2a) offers a lighter, more modern experience but sacrifices camera versatility, display sharpness, and wireless charging.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G Ideal Users:

  • Photography Enthusiasts: Those who want a versatile camera system with telephoto capabilities and 8K video recording.
  • Power Users: Those who value top-tier performance, higher RAM, and more internal storage for demanding tasks.
  • Multimedia Consumers: Those who value a high-resolution, high-brightness display and good audio for an immersive experience.

    • Use Cases: Professional photography, video editing, mobile gaming, media consumption.

Nothing Phone (2a) Ideal Users:

  • Everyday Users: Those who want a reliable, comfortable phone with good performance for day-to-day tasks.
  • Budget-Conscious Buyers: Those who want a good price-to-value ratio without sacrificing essential features like fast charging.
  • Design-Oriented Users: Those who appreciate a unique, lightweight phone with a newer OS experience.

    • Use Cases: Social media browsing, casual gaming, general productivity, fast charging on-the-go.

4. Decision Framework

Key Questions for Buyers:

  1. How important is camera versatility and quality? If photography is a high priority, the S21 Ultra is better.
  2. How much do you value screen sharpness and detail? The S21 Ultra has a much sharper, higher resolution display.
  3. Is fast charging or wireless charging more important to you? Nothing Phone (2a) provides much faster wired charging while the S21 Ultra has wireless charging.

Scenario-Based Recommendations:

  • Scenario 1: Mobile Photography & Videography: Choose Samsung Galaxy S21 Ultra 5G. The superior camera system and 8K video capabilities are ideal for content creators and photography enthusiasts.
  • Scenario 2: Daily Usage and Comfort: Choose Nothing Phone (2a). The lighter design, fast charging, and newer operating system are more suited for everyday use and convenience.
  • Scenario 3: Gaming and Heavy Multitasking: Choose Samsung Galaxy S21 Ultra 5G. The more powerful chipset, high RAM and high display quality makes this phone slightly better for gaming and multitasking.
  • Scenario 4: Budget Conscious: Choose Nothing Phone (2a). The lower price point while providing a good experience and fast charging is ideal for people with a tighter budget.

My Choice

I would choose the Samsung Galaxy S21 Ultra 5G. While the Nothing Phone (2a) is a compelling device with its lightweight design and fast charging, the S21 Ultra offers a superior overall experience in areas that matter most to me: display quality, camera versatility, and overall performance. As a mobile photography enthusiast, having dedicated telephoto lenses, 8K video, and the option for optical zoom provides much more creative flexibility. The higher-resolution display, despite being on an older phone, also provides a much better experience in daily use. Although it may be a bit heavier and have slower charging speeds, the benefits that it provides are more important to me personally. However, the Nothing Phone (2a) is a very solid choice for people who want a lighter and more affordable phone.

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
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Bridging technical complexity with engaging, accessible narratives.