Realme C55 vs Xiaomi 13 Ultra - Detailed Phone Comparison

Detailed Comparison

Specification
Realme C55
Realme C55
Realme

General

Launch Date March 8, 2023 April 21, 2023
Release Year 2023 2023

Physical

Volume 99.3 cm³ 110.79 cm³
Screen Size to Weight Ratio 3.55 "/g 2.96 "/g
Weight 189.5 g 227 g
Height 165.6 mm 163.2 mm
Width 75.9 mm 74.6 mm
Thickness 7.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • Sun Shower
  • Rainy Night
  • Rainforest
  • Black
  • Yellow
  • Blue
  • White
  • Orange
  • Olive Green

Display

Screen Size 6.72 " 6.73 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 86.7 % 89.8 %
Pixel Density 392 PPI 522 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 1300 nits
Peak Brightness 680 nits 2600 nits

Hardware

Battery Capacity per Screen Area 110.72 mAh/in² 110.39 mAh/in²
Battery Density 50.35 mAh/cm³ 45.13 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek MT6769H Helio G88 (12 nm) Qualcomm SM8550-AB Snapdragon 8 Gen 2 (4 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) Octa-core (1x3.2 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
GPU Mali-G52 MC2 Adreno 740

Connectivity

USB Version 2.0 3.2
OTG Support 1
DisplayPort 1
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0 USB Type-C 3.2, OTG, DisplayPort

Software

Operating System Android Android
Initial OS Version 13 13
Maximum OS Version 14

Comparison Summary

1. Specifications Comparison

FeatureRealme C55Xiaomi 13 UltraPractical Impact
Design
Dimensions (H x W x D)165.6 x 75.9 x 7.9 mm163.2 x 74.6 x 9.1 mmXiaomi 13 Ultra is slightly shorter, narrower, but thicker. Realme C55 is noticeably thinner and lighter.
Weight189.5 g227 gRealme C55 is significantly lighter, more comfortable for extended use.
Build MaterialsNot specifiedNot specifiedCannot compare build quality and durability without more information.
Display
Display TypeIPS LCDLTPO AMOLEDXiaomi 13 Ultra offers superior contrast, deeper blacks, and potentially better power efficiency due to LTPO.
Display Size6.72"6.73"Negligible size difference.
Resolution1080 x 24001440 x 3200Xiaomi 13 Ultra has a much sharper display with significantly higher pixel density, resulting in crisper text and images.
Refresh Rate90Hz120HzXiaomi 13 Ultra provides smoother scrolling and animations.
Peak Brightness680 nits2600 nitsXiaomi 13 Ultra is vastly brighter, ensuring excellent outdoor visibility.
HDRNoHDR10+, Dolby VisionXiaomi 13 Ultra supports HDR content, resulting in a more dynamic and vibrant viewing experience.
Performance
ChipsetMediatek Helio G88 (12nm)Qualcomm Snapdragon 8 Gen 2 (4nm)Xiaomi 13 Ultra boasts a significantly more powerful and efficient processor, enabling smoother multitasking, faster app loading, and superior gaming performance.
CPUOcta-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (1x3.2 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)Xiaomi 13 Ultra's CPU architecture provides a substantial performance advantage.
GPUMali-G52 MC2Adreno 740Xiaomi 13 Ultra offers drastically improved graphics performance for demanding games and applications.
RAM6GB/8GB12GB/16GBXiaomi 13 Ultra has significantly more RAM, enabling better multitasking and preventing apps from closing in the background.
Camera
Main Camera64MP50MP (1-inch sensor)While Realme C55 has a higher megapixel count, Xiaomi 13 Ultra's larger 1-inch sensor likely captures more light, resulting in better low-light performance and overall image quality.
Other Cameras2MP Depth, 8MP Selfie50MP Ultrawide, 50MP Telephoto (3.2x), 50MP Periscope Telephoto (5x), 32MP SelfieXiaomi 13 Ultra offers a far more versatile camera system with multiple high-resolution lenses for various shooting scenarios.
Video Recording1080p@60fps8K@24fpsXiaomi 13 Ultra supports much higher video resolution.
Battery
Capacity5000 mAh5000 mAhSimilar battery capacity.
Fast Charging33W90WXiaomi 13 Ultra charges significantly faster.
Wireless ChargingNo50WXiaomi 13 Ultra supports fast wireless charging.

2. Key Differences Analysis

Realme C55 Advantages:

  • Lighter and Thinner: More comfortable for one-handed use and carrying in pockets.
  • More Affordable: Significantly cheaper, offering good value for its price.

Xiaomi 13 Ultra Advantages:

  • Superior Performance: Significantly faster processor, GPU, and more RAM for a smoother and more responsive experience.
  • Higher Quality Display: Brighter, sharper, and more vibrant AMOLED display with HDR support.
  • More Versatile Camera System: Multiple high-resolution lenses, including telephoto and ultrawide, and advanced features.
  • Faster Charging: 90W wired and 50W wireless charging for quicker top-ups.

3. User Profiles & Recommendations

Realme C55: Budget-conscious users who prioritize basic smartphone functionality, lightweight design, and long battery life. Suitable for:

  • Casual social media users
  • Light gaming
  • Basic photography

Xiaomi 13 Ultra: Power users and photography enthusiasts who demand top-tier performance, a premium display, and a cutting-edge camera system. Suitable for:

  • Demanding mobile gamers
  • Content creators
  • Professional photographers/videographers

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? The price difference is substantial.
  2. What are your primary smartphone usage patterns? (Gaming, photography, social media, etc.)
  3. Do you prioritize performance, display quality, and camera capabilities, or affordability and lightweight design?

Scenario-Based Recommendations:

  • Limited Budget: Realme C55 is a solid choice.
  • Best Possible Experience: Xiaomi 13 Ultra provides a flagship experience.
  • Balance of Price and Performance: Consider other phones in the mid-range segment.

My Choice: Xiaomi 13 Ultra

While the Realme C55 offers excellent value for its price, the Xiaomi 13 Ultra is the clear winner for me. The significantly improved performance, stunning display, incredibly versatile camera system, and fast charging capabilities outweigh the higher price and heavier build. As someone who values a smooth user experience, high-quality visuals, and the ability to capture great photos and videos, the Xiaomi 13 Ultra aligns perfectly with my needs. The price premium is justified by the substantial upgrade in features and overall quality. The added weight is a minor trade-off for the significant technological advancements offered.

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.