Xiaomi 12X vs Realme C55 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12X
Xiaomi 12X
Xiaomi
Realme C55
Realme C55
Realme

General

Launch Date December 31, 2021 March 8, 2023
Release Year 2021 2023

Physical

Volume 87.52 cm³ 99.3 cm³
Screen Size to Weight Ratio 3.57 "/g 3.55 "/g
Weight 176 g 189.5 g
Height 152.7 mm 165.6 mm
Width 69.9 mm 75.9 mm
Thickness 8.2 mm 7.9 mm
Foldable Design No No
Available Colors
  • Blue
  • Purple
  • Gray
  • Sun Shower
  • Rainy Night
  • Rainforest

Display

Screen Size 6.28 " 6.72 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.2 % 86.7 %
Pixel Density 419 PPI 392 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1100 nits 680 nits

Hardware

Battery Capacity per Screen Area 114.10 mAh/in² 110.72 mAh/in²
Battery Density 51.41 mAh/cm³ 50.35 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) Mediatek MT6769H Helio G88 (12 nm)
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 650 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

Okay, let's break down the Xiaomi 12X and Realme C55, putting these phones head-to-head in a way that makes sense for real-world users.

1. Specifications Breakdown

Here's a detailed table comparing the key technical specifications, focusing on their real-world implications:

FeatureXiaomi 12XRealme C55Real-World Implications
Design
Dimensions152.7 × 69.9 × 8.2 mm, 176g165.6 × 75.9 × 7.9 mm, 189.5gXiaomi 12X is more compact and lighter, better for one-handed use. Realme C55 is larger and slightly heavier.
Display
Size6.28"6.72"Realme C55 offers more screen real estate for media consumption and multitasking.
Resolution1080x24001080x2400Both offer the same clarity, sufficient for crisp visuals.
Pixel Density419 ppi392 ppiXiaomi 12X offers slightly sharper details due to its higher pixel density.
TechnologyAMOLEDIPS LCDXiaomi 12X provides richer colors, deeper blacks, and better viewing angles; more power efficient as well.
Refresh Rate120Hz90HzXiaomi 12X provides noticeably smoother scrolling and animations.
Brightness1100 nits680 nitsXiaomi 12X is significantly better for outdoor viewing in bright sunlight.
Performance
ChipsetSnapdragon 870 5G (7 nm)Helio G88 (12 nm)Xiaomi 12X delivers far superior performance for gaming, multitasking, and overall responsiveness.
AnTuTu Score815,210245,800Xiaomi 12X is much faster, providing a smoother, snappier experience with demanding apps.
GPUAdreno 650Mali-G52 MC2Xiaomi 12X offers better graphics performance for gaming and intensive tasks.
Camera
Main Camera50MP, f/1.88, 1/1.56", Sony IMX76664MP, 1/2", Omnivision OV64BXiaomi 12X has larger sensor for better low-light performance; Realme has higher resolution.
Selfie Camera32MP, f/2.45, 1/3", OV32B8MP, f/2.0Xiaomi 12X has a much higher resolution for clearer, more detailed selfies.
Wide-Angle Lens13MP, f/2.4, 1/3.06", OV13B10Not AvailableXiaomi 12X offers wide-angle shots for capturing more of the scene.
Portrait (Depth) LensNot Available2MP, f/2.4, 1/5", GalaxyCore GC02M1Realme C55 offers depth-sensing for portrait mode, but has less utility in comparison to an ultrawide lens
Macro Lens5MP, f/2.4, SamsungNot AvailableXiaomi 12X offers dedicated macro photography capabilities.
Video RecordingUp to 8K@24fpsUp to 1080p@60fpsXiaomi 12X can record professional-grade video content, Realme C55 is limited to standard HD.
OISYesNoXiaomi 12X has optical image stabilization for smoother videos and sharper photos in low light.
Battery Life
Capacity4500mAh5000mAhRealme C55 has a slightly larger battery for longer usage between charges.
Charging67W Fast Charging33W Fast ChargingXiaomi 12X charges much faster, quickly topping off the battery.
Other
OSAndroid 11Android 13Realme C55 runs a more recent version of Android, potentially with newer features.
WiFiWi-Fi 6Wi-Fi 5Xiaomi 12X supports faster, more stable Wi-Fi connections.
Bluetooth5.15.2Realme C55 has slightly newer version of Bluetooth
AudioDolby Atmos, Hi-Res, StereoBasic FeaturesXiaomi 12X offers a superior audio experience with spatial sound and higher quality playback.
SecurityBasic Fingerprint SensorSide-mounted Fingerprint SensorBoth devices offer secure biometric fingerprint authentication
Screen ProtectionGorilla Glass VictusUnknownXiaomi 12X provides more robust screen protection against scratches and drops.

2. Key Insights

Xiaomi 12X:

  • Strengths:

    • Superior Performance: The Snapdragon 870 chipset provides a significant performance edge for demanding apps and games, and it feels snappier day to day.
    • Exceptional Display: The AMOLED panel with 120Hz refresh rate and high brightness offers a premium viewing experience with vibrant colors and smooth scrolling.
    • Advanced Camera System: The combination of a larger main camera sensor, a dedicated wide-angle lens, and superior video recording capabilities makes it versatile for photography enthusiasts.
    • Faster Charging: 67W fast charging is a major convenience for quickly topping up the battery.
    • Premium Audio: The Dolby Atmos, Hi-Res audio and Stereo speakers provides better spatial audio.
    • Build Quality: Enhanced with Corning Gorilla Glass Victus screen protection
  • Competitive Advantages: It offers a flagship-level experience in a more compact design.

  • Trade-offs: Battery life might be slightly lower due to the higher performance chipset.
  • Limitations: It lacks a depth sensor for portrait photography and expandable storage.

Realme C55:

  • Strengths:
    • Larger Display: The 6.72" display offers more screen real estate for media consumption and multitasking.
    • Longer Battery Life: The larger 5000mAh battery provides extended usage between charges.
    • More Recent OS: Ships with Android 13.
  • Competitive Advantages: It's an affordable option with a large display and good battery life.
  • Trade-offs: Noticeably lower performance compared to the Xiaomi 12X and lacks premium features such as an AMOLED display, a wide-angle lens, and optical image stabilization.
  • Limitations: The lack of advanced camera features, higher performance chip, and display technology will be noticable for demanding users.

3. User Profiles and Recommendations

Xiaomi 12X:

  • Best Suited For: Power users, gamers, mobile photographers, and anyone who values a premium display and fast performance in a compact design.
  • Use Cases: High-performance gaming, professional photography, video creation, frequent multitasking, and those who prioritize a superior visual and audio experience.
  • Price-to-Value: Worth the premium for users who want a high-end experience with top-tier performance and features, even if the battery life is shorter than the C55.

Realme C55:

  • Best Suited For: Budget-conscious users, casual gamers, media consumers, and those who prioritize long battery life and a large display.
  • Use Cases: Basic daily tasks, social media browsing, watching videos, and light gaming. Great as a secondary device as well.
  • Price-to-Value: An excellent budget option offering a balance of features without breaking the bank.

4. Buying Decision Framework

Here are three practical questions to help you decide:

  1. How important is performance to you?

    • If you're a gamer or a heavy user, the Xiaomi 12X is a better choice due to its far superior chipset. If you're a casual user, the Realme C55 will suffice for basic tasks.
  2. What do you value most in a display?

    • If you prioritize vibrant colors, deep blacks, smooth animations, and high brightness, the Xiaomi 12X's AMOLED screen is far better. If you prefer a larger screen for media consumption, and do not mind the tradeoff in color accuracy, the Realme C55's screen is good enough.
  3. How important is battery life vs. fast charging?

    • If battery life is a priority, the Realme C55 will likely provide more endurance. However, the Xiaomi 12X charges much faster, potentially offsetting its slightly smaller battery.

Scenario-Based Recommendations:

  • The Gamer: Go with the Xiaomi 12X due to its top tier performance.
  • The Photography Enthusiast: Xiaomi 12X is the clear winner here due to its superior camera capabilities, especially video recording.
  • The Budget-Conscious User: The Realme C55 offers a large display, and good battery life at a more budget-friendly price.
  • The Daily Driver: If you just need a phone for basic daily tasks, the Realme C55 is great. However, if you are looking for top tier performance and a high quality screen, the Xiaomi 12X is much more well equipped.

Personal Choice

Personally, I'd choose the Xiaomi 12X. While the Realme C55 has its merits, particularly in battery life, the Xiaomi 12X's overall performance, superior display, and advanced camera features make it a far better daily driver in my opinion. The Snapdragon 870 chipset is a significant upgrade over the Helio G88, and the AMOLED display with its 120Hz refresh rate is a joy to use every single day. The faster charging also means I'm less worried about running out of battery. For me, those things justify choosing the Xiaomi over the Realme. I'm a heavy user, so a phone that can handle everything I throw at it smoothly is essential.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.