Samsung Galaxy S21 Ultra 5G vs Realme GT Neo2 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 September 28, 2021
Release Year 2021 2021

Physical

Volume 111.09 cm³ 111.13 cm³
Screen Size to Weight Ratio 3 "/g 3.31 "/g
Weight 227 g 199.8 g
Height 165.1 mm 162.9 mm
Width 75.6 mm 75.8 mm
Thickness 8.9 mm 9 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Neo Black
  • Neo Blue
  • Neo Green

Display

Screen Size 6.8 " 6.62 "
Resolution 1440 x 3200 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 85.7 %
Pixel Density 515 PPI 398 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1500 nits 1300 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 114.09 mAh/in²
Battery Density 45.01 mAh/cm³ 44.99 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPU Mali-G78 MP14 - International Adreno 650

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 11
Maximum OS Version 15 12

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
Dimensions165.1 × 75.6 × 8.9 mm162.9 × 75.8 × 9 mmS21 Ultra is slightly taller but both are similar in width and thickness. Minimal real-world difference in hand feel.
Weight227g199.8gRealme GT Neo2 is noticeably lighter, making it more comfortable for extended use.
BuildGorilla Glass Victus frontUnknownS21 Ultra has superior scratch and shatter resistance on the screen; Realme GT Neo2's screen durability is unknown.

Display

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
Size6.8"6.62"S21 Ultra has a slightly larger screen, potentially better for media consumption.
Resolution1440x32001080x2400S21 Ultra's higher resolution means sharper images and text, especially noticeable with small details.
Pixel Density515 PPI398 PPIS21 Ultra has significantly sharper text and image clarity, resulting in a much crisper display.
TechnologyAMOLEDAMOLEDBoth offer excellent contrast and vibrant colors.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1500 nits1300 nitsS21 Ultra is more visible under direct sunlight.

Performance

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
ChipsetExynos 2100 (5 nm) - InternationalQualcomm Snapdragon 870 5G (7 nm)Different chipsets. The Snapdragon 870 is generally considered more reliable and efficient.
AnTuTu Score749,000794,643Realme GT Neo2 benchmarks higher, suggesting slightly better performance for demanding tasks like gaming.
GPUMali-G78 MP14 (International)Adreno 650Different GPUs, real-world performance will vary depending on specific game and application optimizations; the Adreno is generally better optimized.

Camera

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
Main Camera108MP, f/1.8, 1/1.33" sensor64MP, f/1.8, 1/1.72" sensorS21 Ultra captures more detail and performs better in low light due to its higher resolution and larger sensor.
Telephoto (x1)10.8MP, f/2.4, 1/2.65" sensorN/AS21 Ultra offers optical zoom for lossless magnification; Realme has no dedicated telephoto.
Telephoto (x2)10.8MP, f/4.9, 1/2.65" sensorN/AS21 Ultra provides further optical zoom for distant subjects; Realme has no dedicated telephoto.
Wide Angle12.2MP, f/2.2, 1/2.55" sensor8MP, f/2.3, 1/4" sensorS21 Ultra has a higher resolution ultra-wide sensor, potentially better image quality.
MacroN/A2MP, f/2.4, 1/5" sensorRealme GT Neo2 has a dedicated macro camera for close-up shots; S21 Ultra does not.
Selfie44MP, f/2.2, 1/2.65" sensor16MP, f/2.5, 1/3.13" sensorS21 Ultra captures more detail with its higher resolution sensor, performs better in low light due to its wider aperture and larger sensor.
VideoUp to 8K@24fps, 4K@60fps, with HDR, EIS, stereo sound, slow-motion up to 960fpsUp to 4K@60fps with EIS, slow-motion up to 240 fpsS21 Ultra offers significantly higher video resolution and higher slow-motion capabilities, making it suitable for more demanding video needs
DXOMarkMobile: 115, Photo: 121, Video: 100, Selfie: 135, Photo: 133, Video: 140N/AS21 Ultra has a tested and established camera performance advantage, Realme GT Neo2 lacks review on performance.

Battery

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
Capacity5000mAh5000mAhBoth should offer similar battery life, depending on usage patterns.
Charging25W Fast Charging65W Fast ChargingRealme GT Neo2 charges significantly faster, reducing downtime.
FeaturesWireless Charging, Reverse ChargingNon-removable,S21 Ultra has more features, including wireless charging and reverse charging for accessories

Other

FeatureSamsung Galaxy S21 Ultra 5GRealme GT Neo2Practical Impact
Operating SystemAndroid 11 (Up to 15)Android 11 (Up to 12)S21 Ultra offers longer software support and updates.
Storage128/256/512 GB128/256 GBS21 Ultra has a 512GB option for users needing more storage.
RAM12/16 GB6/8/12 GBS21 Ultra offers more RAM, better for heavy multitasking.
Expandable StorageNoNoNeither phone offers expandable storage, limiting user options.
GPSGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), Galileo (E1+E5a)GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)Realme GT Neo2 has a higher capacity, offers more options and will likely have a more accurate GPS signal.
AudioDolby Atmos, Hi-Res Audio, Stereo SpeakersDolby Atmos, Hi-Res Audio, Stereo Speakers, 2 MicrophonesRealme GT Neo2 has better audio quality due to its 2 microphones.
SecurityBasic Fingerprint sensorBasic Fingerprint sensorBoth phones have a basic fingerprint sensor.
SensorsBiometric: Fingerprint; Proximity: Proximity; Motion: Accelerometer, Compass, Gyroscope; Environmental: BarometerBiometric: Fingerprint; Proximity: Proximity; Motion: Accelerometer, GyroscopeSamsung has a compass and barometer as an added bonus.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Superior Display: Significantly higher resolution and pixel density, resulting in a much sharper and more detailed viewing experience.
  • Advanced Camera System: Features a more versatile camera setup with two telephoto lenses for enhanced zoom capabilities, a higher-resolution main sensor, and better video recording capabilities.
  • Wireless Charging & Reverse Wireless Charging: Offers convenient wireless and reverse wireless charging, allowing the phone to charge other devices.
  • Premium Build Quality: Features Gorilla Glass Victus for superior screen protection and an overall more premium feel.
  • Better Software Support: Offers longer software support with updates up to Android 15.
  • More RAM: Comes in a 16GB RAM version for better multitasking.
  • Additional Sensors: Compass and Barometer are added bonuses.

Realme GT Neo2 Advantages:

  • Lighter Design: Noticeably lighter, making it more comfortable for extended use.
  • Faster Charging: 65W fast charging significantly reduces charging times.
  • Higher Benchmark Performance: Slightly higher benchmark scores, indicating marginally better performance for gaming and demanding applications.
  • Macro Lens: Dedicated macro camera for close-up shots.
  • Better Audio: Better overall audio due to its 2 microphones.
  • More Accurate GPS: Supports more satellite systems for a more accurate signal.

Trade-offs:

  • S21 Ultra: Heavier and bulkier, slower charging, and generally more expensive.
  • Realme GT Neo2: Lacks the premium display and camera system of the S21 Ultra, as well as wireless charging and reverse charging, less software support.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G is ideal for:

  • Photography Enthusiasts: Users who prioritize camera versatility, zoom capabilities, and image quality.
  • Media Consumers: Those who value a high-resolution display for watching movies and videos.
  • Power Users: Individuals who require heavy multitasking capabilities.
  • Tech Enthusiasts: Users who prefer premium build quality and features like wireless charging.

Use Cases:

  • Professional photographers who need a versatile camera system with different focal lengths.
  • Users who want a top-tier display for enjoying high-resolution content.
  • Professionals who need a device that can handle demanding tasks and multiple applications.
  • Users who prefer a more premium phone with advanced features.

Realme GT Neo2 is ideal for:

  • Gamers: Users who prioritize smooth performance and fast charging.
  • Value-Conscious Buyers: Those seeking excellent performance at a lower price.
  • Users who prefer light phones: Those who value a light phone more than premium features.
  • Users who use Macro Lenses: Those who like to take photos close up.
  • Users who value audio quality: Those who prefer an overall great audio experience.

Use Cases:

  • Mobile gamers who need a fast and responsive device with quick charging.
  • Users who want a high-performing phone without paying a premium price.
  • Those who need a reliable and fast-charging phone for daily use.
  • Users who prioritize a light device.

4. Decision Framework

Key Questions for Buyers:

  1. How important is camera quality and versatility? (S21 Ultra is superior here)
  2. How important is charging speed, and do you need wireless charging? (Realme GT Neo2 charges faster, but S21 Ultra offers wireless and reverse charging)
  3. How important is having the best screen quality? (S21 Ultra has a much sharper screen).

Scenario-Based Recommendations:

  • Scenario 1: Best Camera: If your priority is photography and videography with optical zoom and the best video quality, choose the Samsung Galaxy S21 Ultra 5G.
  • Scenario 2: Best Value: If you want the best performance-to-price ratio, prioritize fast charging, and prefer a lighter device, choose the Realme GT Neo2.
  • Scenario 3: Best Screen: If having a top tier display with the sharpest image is your main focus, choose the Samsung Galaxy S21 Ultra 5G.
  • Scenario 4: Balanced User: If you have a more balanced approach and prioritize a well-rounded experience, carefully consider the trade-offs and your budget.

My Choice

If I were to choose, I would personally go for the Samsung Galaxy S21 Ultra 5G.

Reasoning:

While the Realme GT Neo2 offers better value for performance and charging speed, my main priorities in a smartphone are camera quality, display experience, and overall software support. The S21 Ultra's significantly better camera system, premium display and higher software support make it worth the extra cost for my use case. I value a phone with a quality display and versatile camera more than fast charging capabilities.

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.