Samsung Galaxy S21+ 5G vs Realme C53 - Detailed Phone Comparison

Detailed Comparison

Specification
Realme C53
Realme C53
Realme

General

Launch Date January 29, 2021 May 31, 2023
Release Year 2021 2023

Physical

Volume 95.23 cm³ 96.24 cm³
Screen Size to Weight Ratio 3.35 "/g 3.7 "/g
Weight 200 g 182 g
Height 161.5 mm 167.3 mm
Width 75.6 mm 76.7 mm
Thickness 7.8 mm 7.5 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Champion Gold
  • Mighty Black

Display

Screen Size 6.7 " 6.74 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.8 % 85.5 %
Pixel Density 394 PPI 390 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1300 nits 560 nits

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 110.07 mAh/in²
Battery Density 50.4 mAh/cm³ 51.95 mAh/cm³
Battery Capacity 4800 mAh 5000 mAh
NFC Support Yes No
Chipset Exynos 2100 (5 nm) - International Unisoc Tiger T612 (12 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Mali-G78 MP14 - International Mali-G57

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 13
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21+ 5GRealme C53Practical Impact
Design
Dimensions161.5 × 75.6 × 7.8 mm167.3 × 76.7 × 7.5 mmRealme C53 is slightly taller and wider, but thinner.
Weight200g182gRealme C53 is noticeably lighter, which could be more comfortable for extended use.
Display
Size6.7"6.74"Negligible difference in screen size.
Resolution1080x24001080x2400Identical sharpness.
PPI394390Very similar pixel density, resulting in almost identical visual clarity.
TechnologyAMOLEDIPS LCDSamsung's AMOLED offers deeper blacks, better contrast, and more vibrant colors.
Refresh Rate120Hz90HzSamsung's 120Hz display provides smoother scrolling and animations.
Brightness1300 nits0 nitsSamsung offers vastly superior outdoor visibility in bright sunlight. Realme C53's brightness is not specified.
Performance
ChipsetExynos 2100 (5 nm)Unisoc Tiger T612 (12 nm)Samsung's chipset offers significantly better performance in all tasks.
AnTuTu Score749,100220,000The S21+ has much faster app loading, smoother multitasking, and better gaming performance.
GPUMali-G78 MP14Mali-G57 MP1The S21+ offers much better graphics performance, better for demanding games and apps.
Battery
Capacity4800mAh5000mAhRealme C53 has a slightly larger battery that may provide marginally better battery life.
Charging25W fast charging33W fast chargingRealme C53 charges faster than the S21+.
FeaturesWireless Charging, Reverse Charging, No charger in boxNon-removableSamsung offers more charging options, but does not include a charger in box.
Camera
Main Camera12MP, f/1.8, 1/1.76", 1.8µm50MP, f/1.8Realme C53 has higher resolution, but sensor size and pixel size are not specified.
Telephoto Camera64MP, f/2.0, 1/1.72", 0.8µmNot availableThe S21+ has an optical zoom capability which is not available on the Realme C53
Ultra-wide Camera12.2MP, f/2.2, 1/2.55", 1.4µmNot availableThe S21+ allows for wider shots and macro photography.
Selfie Camera10MP, f/2.2, 1/3.2", 1.22µm8MP, f/2.0S21+ has slightly higher resolution, but the Realme C53 has a wider aperture.
Depth CameraNot available2MP, f/2.4Realme C53 allows for better bokeh in portrait photos.
Video8K@24fps, 4K@60fps, 1080p@240fps1080p@30fpsS21+ allows for higher quality video recording.
DXOMark Score111 (Mobile)Not AvailableSamsung's camera has been tested and scored well, while there is no data for the Realme C53.
Camera FeaturesOIS, Optical zoom, 4K/8K video, Night mode, RAWDual camera, digital zoomS21+ offers more advanced camera features.
Software
OSAndroid 11 (upgradable to 15)Android 13Realme C53 comes with newer OS.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)802.11acS21+ has newer Wi-Fi offering better speeds and latency.
BluetoothBluetooth 5.0 LE, more featuresBluetooth 5.0 LE, EDRThe S21+ has more Bluetooth profiles, which could result in wider compatibility for accessories.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, GalileoThe S21+ has better accuracy with more satellite systems.
SIMDual SIM + eSIMDual SIMThe S21+ can use an eSIM for more flexible carrier options.
Storage & Audio
Internal128/256GB128/256GBBoth phones come with 128GB or 256GB storage options.
RAM8GB4GB/6GB/8GBS21+ has a default 8GB.
ExpandableNoNoNeither phone can expand storage.
AudioDolby Atmos, Hi-Res, Stereo speakersBasic audioS21+ provides better audio quality.
Security
FingerprintBasicSide-mountedRealme C53's fingerprint sensor is more accessible.
Build & Sensors
Screen ProtectionCorning Gorilla Glass VictusUnknownS21+ has better screen protection.
SensorsBarometer, Compass, Gyroscope, Proximity, AccelerometerProximity, AccelerometerS21+ has more environmental and motion sensors.

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Superior Display: AMOLED technology, higher refresh rate, and significantly higher brightness for much better viewing experience, especially outdoors.
  • Much Higher Performance: The Exynos 2100 chip is significantly faster than the Unisoc chip, making the phone better for demanding apps and gaming.
  • More Versatile Camera System: Includes a telephoto lens, ultra-wide camera, and advanced video capabilities. Has more advanced features such as OIS, and 4K/8K recording.
  • Better Connectivity: Supports Wi-Fi 6, a wider range of Bluetooth profiles, and more GPS systems. Also, has eSIM support.
  • Enhanced Audio: Features stereo speakers, Dolby Atmos, and Hi-Res audio support.
  • Better Build Quality: Uses Corning Gorilla Glass Victus for screen protection.
  • More Sensors: Includes a barometer, gyroscope, and compass.

Realme C53 Advantages:

  • Lower Price Point: Likely much cheaper than the S21+, making it more accessible.
  • Faster Charging: 33W charging is faster than the 25W charging on the S21+.
  • Larger Battery (Marginally): A slightly larger battery might provide a bit more runtime.
  • Newer OS out-of-the-box: Ships with Android 13 out of the box, while the S21+ ships with Android 11 (can be upgraded to 15).
  • Side-Mounted Fingerprint Sensor: Provides potentially more convenient access for some users.

Trade-offs:

  • S21+ Trade-off: Higher price, no charger in-box, and a slightly lower battery capacity (but similar real world performance due to display and processing power).
  • Realme C53 Trade-off: Significantly weaker performance, basic display, and a less advanced camera.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G Ideal Users:

  • Power Users: Individuals who need a phone that can handle heavy multitasking, demanding games, and video editing.
  • Photography Enthusiasts: Users who value a versatile camera system with optical zoom and advanced video features.
  • Multimedia Lovers: Users who enjoy consuming content and prefer high-quality audio and video experiences.
  • Those needing a reliable phone for outdoor use: The display is bright enough to be visible under direct sunlight.
  • Users seeking a complete feature set: Wireless charging, reverse charging, superior screen protection.

Realme C53 Ideal Users:

  • Budget-Conscious Buyers: Users looking for an affordable smartphone that covers basic tasks.
  • Everyday Users: Those who primarily use their phones for social media, browsing, and communication and do not do demanding tasks.
  • Users Prioritizing Battery Life: Individuals looking for a device with a good battery and fast charging.
  • Users who prefer simpler phones: Those who do not need or want the advanced features of the S21+.

Use Cases:

  • S21+ Excels In:

    • Gaming: High performance and refresh rate makes for a smooth experience.
    • Professional Photography/Videography: Offers advanced shooting features and 4k/8k recording.
    • Outdoor use: The bright display allows users to use the phone under direct sunlight.
    • Long-term usage: powerful chipset makes the phone more future-proof.
  • Realme C53 Excels In:

    • Casual Use: Good for basic communication and browsing.
    • Everyday social media: Good for social media and light tasks.
    • Extended Use: Good for users who prioritize battery life over performance.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The S21+ is likely much more expensive.
  2. How important is performance and gaming? The S21+ is significantly more powerful.
  3. How important is camera quality and versatility? The S21+ offers a much more comprehensive camera system.

Scenario-Based Recommendations:

  • Scenario 1: Prioritizing Performance and Display Quality

    • Recommendation: Samsung Galaxy S21+ 5G. If budget allows, the S21+ will offer the best experience with its superior display, processing power and camera.
  • Scenario 2: Budget-Conscious and Basic Use

    • Recommendation: Realme C53. If your budget is tight and you just need a functional phone, the Realme C53 will get you through.
  • Scenario 3: Battery Life and Fast Charging:

    • Recommendation: Realme C53. If you prioritize a longer battery life and faster charging the Realme C53 is the winner here.

My Choice

I would choose the Samsung Galaxy S21+ 5G. The primary reasons are the significantly better display (AMOLED, higher refresh rate, much higher brightness), superior performance (for smoother, faster, more fluid overall use), and the advanced camera system (for greater versatility and higher quality pictures and video), as well as the inclusion of wireless charging and reverse charging which are missing from the Realme C53. While the Realme C53 offers a lower price and faster charging, the trade-offs in performance, display quality, and camera capabilities are too significant for my preferences. The S21+ also has better build quality and more advanced connectivity features. Although it is a slightly older phone, the overall quality and the performance it provides is significantly better, which is an investment in the long run.

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.