vivo V21 5G vs Realme C55 - Detailed Phone Comparison

Detailed Comparison

Specification
Realme C55
Realme C55
Realme

General

Launch Date May 6, 2021 March 8, 2023
Release Year 2021 2023

Physical

Volume 86.15 cm³ 99.3 cm³
Screen Size to Weight Ratio 3.66 "/g 3.55 "/g
Weight 176 g 189.5 g
Height 159.7 mm 165.6 mm
Width 73.9 mm 75.9 mm
Thickness 7.3 mm 7.9 mm
Foldable Design No No
Available Colors
  • Arctic White
  • Dusk Blue
  • Sunset Dazzle
  • Sun Shower
  • Rainy Night
  • Rainforest

Display

Screen Size 6.44 " 6.72 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 84.8 % 86.7 %
Pixel Density 409 PPI 392 PPI
Refresh Rate 90 Hz 90 Hz
Typical Brightness 500 nits N/A
HBM Brightness N/A N/A
Peak Brightness N/A 680 nits

Hardware

Battery Capacity per Screen Area 96.45 mAh/in² 110.72 mAh/in²
Battery Density 46.43 mAh/cm³ 50.35 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 800U (7 nm) Mediatek MT6769H Helio G88 (12 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Mali-G57 MC3 Mali-G52 MC2

Connectivity

USB Version 2.0 2.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version

Comparison Summary

Smartphone Comparison: vivo V21 5G vs. Realme C55

1. Specifications Comparison

Featurevivo V21 5GRealme C55Practical Impact
Design
Launch Date2021-05-062023-03-08Realme C55 is newer, potentially having longer software support.
Dimensions159.7 × 73.9 × 7.3 mm165.6 × 75.9 × 7.9 mmRealme C55 is larger and slightly thicker, potentially less comfortable for one-handed use for those with smaller hands.
Weight176g189.5gvivo V21 5G is lighter, making it slightly easier to hold for longer periods.
Display
Size6.44"6.72"Realme C55 has a larger screen, better for media consumption and gaming.
Resolution1080x24001080x2400Both offer the same sharpness.
PPI409392Negligible difference in pixel density, both screens will appear equally sharp.
TechnologyAMOLEDIPS LCDvivo V21 5G's AMOLED provides superior contrast, deeper blacks, and more vibrant colors; better for media viewing, especially HDR content.
Refresh Rate90Hz90HzBoth offer the same smooth scrolling experience.
Brightness0 nits680 nitsRealme C55 is significantly brighter, offering much better outdoor visibility in bright sunlight.
Performance
ChipsetMediatek Dimensity 800U (7 nm)Mediatek MT6769H Helio G88 (12 nm)vivo V21 5G has a more powerful processor, leading to faster app loading and smoother performance in demanding tasks and gaming.
AnTuTu Score343,150245,800vivo V21 5G offers noticeably faster overall performance.
GPUMali-G57 MC3Mali-G52 MC2vivo V21 5G has a more powerful GPU, resulting in better gaming performance and smoother graphics.
Battery
Capacity4000mAh5000mAhRealme C55 offers much longer battery life, potentially lasting a full day with heavy use, while the vivo V21 5G might require a mid-day charge.
Charging33W Fast Charging33W Fast ChargingBoth offer fast charging, reaching a full charge relatively quickly.
Camera
Rear Standard64MP, f/1.79, 0.80µm64MP, f/ , 0.70µm, 1/2" OV64BBoth have 64MP sensors, expect similar photo quality in daylight conditions with slight differences due to sensor size and pixel size.
Front Selfie44MP, f/2.0, 1/2.65" S5KGH1, 0.70µm8MP, f/2.0, 0.70µmvivo V21 5G's front camera has far higher resolution, ideal for detailed selfies and video calls.
Wide Angle Lens8MP, f/2.2Nonevivo V21 5G has a wide-angle lens, beneficial for landscape and group photos.
Portrait (depth)None2MP, f/2.4, 1/5", GC02M1, 1.75µmRealme C55 has a depth sensor for better bokeh effect in portrait photos.
Macro Lens2MP, f/2.4Nonevivo V21 5G has a macro lens for close-up photography.
Video4K@30fps, 1080p@30/60fps OIS1080p@30/60fpsvivo V21 5G records in 4K and offers optical image stabilization (OIS), providing significantly better video quality and stability.
Software
OSAndroid 11Android 13Realme C55 has a newer Android version, likely receiving more updates and security patches.
Connectivity
Wi-Fi802.11a/b/g/n/ac802.11a/b/g/nvivo V21 5G supports 802.11ac (Wi-Fi 5), offering higher throughput and better Wi-Fi performance.
Bluetooth5.1, A2DP, LE, aptX, LDAC, SBC5.2, A2DP, EDR, HID, LERealme C55 uses Bluetooth 5.2, offering slight advantages in connection stability, range, and power efficiency, while vivo V21 5G has better audio codec support
Storage
Internal128GB/256GB64GB/128GB/256GBBoth offer similar maximum storage options but Realme C55 starts with a lower base model of 64 GB.
RAM8GB4GB/6GB/8GBBoth offer 8GB of RAM as a higher option, but Realme C55 offers also a 4GB and 6GB variant.
Expandable StorageNoNoNeither offer expandable storage, so users should consider their storage needs carefully before choosing.
Security
Fingerprint Sensorbasic fingerprint sensorside-mounted fingerprint sensorRealme C55 offers a more convenient side-mounted fingerprint sensor.
SensorsAccelerometer, Compass, Gyroscope, Proximity, FingerprintAccelerometer, Proximity, Fingerprintvivo V21 5G includes more sensors (Compass, Gyroscope), beneficial for advanced use cases like gaming and AR/VR applications
## 2. Key Differences Analysis

vivo V21 5G Advantages:

  • Superior Display: AMOLED screen provides significantly better contrast and color vibrancy.
  • Better Performance: More powerful processor and GPU for smoother multitasking and gaming.
  • Enhanced Camera System: Includes a high-resolution selfie camera, wide-angle lens, and macro lens and 4K Video Recording. Also has OIS.
  • Advanced Connectivity: Supports WiFi ac (WiFi 5), offering better Wi-Fi performance.
  • More Sensors: Includes Compass and Gyroscope, beneficial for advanced use cases.

Realme C55 Advantages:

  • Significantly Better Battery Life: Larger battery provides substantially longer usage time.
  • Higher Screen Brightness: Much better outdoor visibility in bright sunlight.
  • Newer Android Version: Comes with Android 13, offering the latest features and security.
  • Side-Mounted Fingerprint Sensor: More convenient than a basic sensor.
  • Portrait (depth) Camera: Better portrait images with bokeh effect.

Trade-offs:

  • vivo V21 5G: Sacrifices battery life and screen brightness for display quality and performance, plus older software.
  • Realme C55: Sacrifices screen quality, processing power and video capabilities for battery life and brightness.

3. User Profiles & Recommendations

vivo V21 5G Ideal User:

  • Media Enthusiasts: Users who value vibrant colors and deep blacks for movies and videos.
  • Gamers: Those who prioritize smooth gameplay and responsiveness.
  • Selfie Lovers: Individuals who want high-quality front-facing camera performance.
  • Photography Enthusiasts: Those who appreciate additional camera features like wide angle, macro lens and OIS.
  • Users who prefer a slightly smaller and lighter device

Realme C55 Ideal User:

  • Heavy Smartphone Users: Individuals who need all-day battery life.
  • Outdoor Users: Those who require a bright screen visible in sunlight.
  • Budget-Conscious Consumers: Users who prioritize value and essential features.
  • Users who appreciate recent software

Specific Use Cases:

  • vivo V21 5G: Ideal for watching HDR content, playing graphically intensive games, taking high resolution selfies, and recording high quality video.
  • Realme C55: Ideal for long days away from a charger, navigating outdoors, and general everyday use.

4. Decision Framework

Key Questions for Buyers:

  1. How important is battery life? If you need all-day battery without charging, the Realme C55 is a better fit.
  2. Do you prioritize display quality or brightness? The vivo V21 5G has a better AMOLED display, but the Realme C55 has a much brighter screen.
  3. How important is camera quality? The vivo V21 5G is better for selfies and offers more versatility, but the Realme C55 has a depth sensor.

Scenario-Based Recommendations:

  • Scenario 1: Outdoor Worker - If you are always outside, often in bright light, and you need long battery life, choose the Realme C55.
  • Scenario 2: Gamer/Media Lover - If you prioritize smooth gaming, watching videos, and enjoying vibrant content, choose the vivo V21 5G.
  • Scenario 3: Social Media User - If you take a lot of selfies and want the best front-facing camera, the vivo V21 5G is the better option.

My Choice

If I were choosing between these two phones, I would lean towards the vivo V21 5G. While the Realme C55 has compelling advantages in battery life and screen brightness, the superior display quality and processing power of the V21 5G are more important to me for my daily usage. I often consume media, and play games, and I appreciate the higher resolution front facing camera, wide angle camera and 4K video recording capabilities. While the battery life is not the best and the OS is not the newest, I am comfortable carrying a power bank if I need to. The display quality is not replaceable with an external accessory.

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.

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  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.