Xiaomi 12 vs Realme C51 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12
Xiaomi 12
Xiaomi
Realme C51
Realme C51
Realme

General

Launch Date December 31, 2021 August 1, 2023
Release Year 2021 2023

Physical

Volume 87.52 cm³ 102.59 cm³
Screen Size to Weight Ratio 3.51 "/g 3.62 "/g
Weight 179 g 186 g
Height 152.7 mm 167.2 mm
Width 69.9 mm 76.7 mm
Thickness 8.2 mm 8 mm
Foldable Design No No
Available Colors
  • Blue
  • Green
  • Purple
  • Gray
  • Mint Green
  • Carbon Black

Display

Screen Size 6.28 " 6.74 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.2 % 85.5 %
Pixel Density 419 PPI 260 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1100 nits 560 nits

Hardware

Battery Capacity per Screen Area 114.10 mAh/in² 110.07 mAh/in²
Battery Density 51.41 mAh/cm³ 48.74 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm) Unisoc Tiger T612 (12 nm)
CPU Octa-core (1x3.00 GHz Cortex-X2 & 3x2.50 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU Adreno 730 Mali-G57

Connectivity

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

Software

Operating System Android Android
Initial OS Version 12 13
Maximum OS Version

Comparison Summary

Alright, let's dive into a detailed comparison of the Xiaomi 12 and the Realme C51. As a tech journalist and analyst, I'm here to break down the specs and tell you what they really mean for your daily use. We'll go beyond the numbers and explore how these devices stack up in real-world scenarios.

1. Specifications Breakdown

Here's a table comparing the key specs, focusing on their practical implications:

FeatureXiaomi 12Realme C51Real-World Implications
Design
Size152.7 × 69.9 × 8.2 mm167.2 × 76.7 × 8 mmRealme C51 is noticeably larger and may feel less comfortable in one hand. The Xiaomi 12's smaller size is more pocketable.
Weight179g186gXiaomi 12 is slightly lighter, which could be a factor for comfortable extended use.
Display
Size6.28"6.74"Realme C51 offers a larger screen, better for media consumption and gaming; Xiaomi 12 offers a more compact experience.
Resolution1080x2400720x1600Xiaomi 12 has a significantly sharper display with more detail; Realme C51 will have a noticeably lower-resolution display, resulting in less crisp text and images.
Pixel Density (PPI)419260The Xiaomi 12 offers much sharper visuals, making text and images crisper; the Realme C51 will look noticeably less sharp.
TechnologyAMOLEDIPS LCDXiaomi 12 offers superior contrast, vibrant colors, and deeper blacks; Realme C51's IPS LCD may appear washed out by comparison, especially in dark themes.
Refresh Rate120Hz90HzXiaomi 12 provides smoother scrolling and animations; The Realme C51 still provides smooth experience but is not as fluid.
Brightness1100 nits0 nitsXiaomi 12 offers excellent visibility in bright sunlight; The Realme C51 lacks specified brightness and will likely struggle in bright outdoor conditions.
Performance
ChipsetQualcomm Snapdragon 8 Gen 1 (4 nm)Unisoc Tiger T612 (12 nm)Xiaomi 12's chipset is a high-performance powerhouse, while the Realme C51 uses a budget-level chip. This is the biggest difference between the two phones.
AnTuTu Score1,150,831220,000Xiaomi 12 offers vastly superior speed and performance, ideal for gaming and heavy multitasking; Realme C51 is suitable for basic tasks only.
GPUAdreno 730Mali-G57Xiaomi 12 has a much more powerful GPU for demanding graphics, especially gaming. Realme C51 will likely show performance limitations in more graphically intense games.
Camera
Main Camera Resolution50MP50MPBoth offer high-resolution main cameras but the image quality of Xiaomi is significantly higher due to its better sensor.
Main Camera Aperturef/1.88f/1.8Realme C51 has a slightly wider aperture, which could provide a little better low-light performance, but the sensor is not as high end as the Xiaomi's.
Main Camera Sensor Size1/1.56"1/2.76"Xiaomi 12's larger sensor captures more light and detail, resulting in higher image quality.
Selfie Camera Resolution32MP5MPXiaomi 12 takes significantly sharper and detailed selfies; Realme C51's selfie camera may lack detail.
Selfie Camera Sensor Size1/3.14"1/5"Xiaomi 12's larger sensor allows more light, resulting in better selfie quality in various lighting conditions.
Wide Angle Lens13MPNoneXiaomi 12 offers additional versatility with a dedicated wide-angle lens for capturing more in the frame.
Macro Lens5MPNoneXiaomi 12 offers additional versatility with a dedicated macro lens for capturing close up shots.
Video RecordingUp to 8K@24fps1080p@30fpsXiaomi 12 offers professional-grade video capabilities; Realme C51 is limited to basic HD video.
Camera FeaturesOIS, Ultra stable video, 8k/4k, RAW, etcBasic Features, No OIS.Xiaomi 12 offers many features, with professional video recording capabilities.
Battery Life
Capacity4500mAh5000mAhRealme C51 has a larger battery and may offer longer battery life due to its less power hungry chipset; However, due to Xiaomi's optimized software, battery usage can be similar.
Charging67W Fast Charging33W Fast ChargingXiaomi 12 can charge significantly faster; both phones charge fast but Xiaomi 12 is almost double the speed.
Wireless Charging Features50W Wireless, Reverse ChargingNoneXiaomi 12 offers convenient wireless charging and reverse charging capabilities.
Other
SoftwareAndroid 12Android 13Realme C51 comes with a more recent version of Android. However, you can update Xiaomi 12 to the newest version as well.
WiFiWiFi 6WiFi 5Xiaomi 12 has better wifi connectivity, faster speeds, lower latency, better performance in crowded networks
BluetoothBluetooth 5.2Bluetooth 5.0Xiaomi 12 has slightly better Bluetooth connectivity with APT-x support.
Storage128/256 GB64/128/256 GBXiaomi 12 has more variants to choose from, both devices have no expandable storage.
RAM8/12 GB4/6 GBXiaomi 12 offers better performance due to more RAM.
AudioDolby Atmos, Hi-Res AudioNoise cancellation microphoneXiaomi 12 has superior audio system with more immersive audio experience, Hi-Res for high quality audio.
Fingerprint Sensorbasic fingerprint sensorside-mounted fingerprint sensorRealme C51 offers better security with a side-mounted fingerprint sensor.
Screen ProtectionCorning Gorilla Glass VictusUnknownXiaomi 12 has better scratch resistance with its advanced gorilla glass protection.

2. Key Insights

Xiaomi 12 Strengths:

  • Unmatched Performance: The Snapdragon 8 Gen 1 chipset delivers top-tier speed for gaming, multitasking, and demanding applications.
  • Superior Display: The AMOLED screen with 120Hz refresh rate and high brightness offers a vibrant, smooth, and immersive experience.
  • High-End Camera System: The main camera with its larger sensor and features, paired with a 32MP selfie camera and 8k Video, far surpasses the Realme C51.
  • Advanced Features: Features like 50W fast wireless charging, reverse charging, and an in-screen fingerprint sensor add convenience and usability.
  • Premium Build Quality: Gorilla Glass Victus on the display provides superior protection against scratches.

Realme C51 Strengths:

  • Larger Battery: A 5000mAh battery ensures longer battery life.
  • Larger Display: A 6.74" screen provides more viewing area, good for media consumption and gaming.
  • Lower Cost: It's designed as a more budget-friendly option, offering acceptable performance for everyday use.
  • Side-Mounted Fingerprint Sensor: A more convenient and reliable biometric security feature compared to in screen or basic fingerprint sensors.
  • More variants to choose from: The Realme C51 has a 64 GB variant.

Trade-offs and Limitations:

  • Xiaomi 12: Has a smaller screen and a slightly smaller battery compared to the Realme C51. It is more expensive.
  • Realme C51: Significantly lower performance, inferior display, basic camera, and lack of premium features, making it less suitable for power users.

3. User Profiles and Recommendations

Xiaomi 12 is best suited for:

  • Power Users: Those who demand top performance for gaming, content creation, or heavy multitasking.
  • Photography Enthusiasts: Users who prioritize high-quality photos and videos.
  • Media Consumers: People who want an immersive viewing experience with vibrant colors and smooth refresh rates.
  • Those who prefer a compact phone: The phone's size makes it a great phone to use single-handed.
  • Users willing to pay a premium for a premium experience.

Realme C51 is best suited for:

  • Budget-Conscious Users: Those looking for an affordable smartphone for basic tasks.
  • Casual Users: People who primarily use their phones for calls, messaging, social media, and casual browsing.
  • Users who prioritize battery life: The larger battery is a significant advantage for those who don't want to worry about daily charging.
  • Those who prefer a big screen The screen makes it better for media consumption.

4. Buying Decision Framework

Here are three key questions to help you decide:

  1. What is your primary use case? If you need top performance and excellent camera quality, the Xiaomi 12 is a clear choice. If you only need a basic phone for everyday tasks with a large screen and long battery, the Realme C51 could be sufficient.

  2. How important is display quality? If you appreciate vibrant colors, sharp visuals, and smooth scrolling, the Xiaomi 12's AMOLED display is superior. The Realme C51's lower-resolution LCD may feel like a downgrade.

  3. What is your budget? The Xiaomi 12 is a premium device with a premium price tag. If you're on a tight budget, the Realme C51 offers good value for basic functionality.

Scenario-Based Recommendations:

  • For Gamers: Xiaomi 12 - High-end chipset with great GPU will ensure a smooth and immersive experience.
  • For Photography Lovers: Xiaomi 12 - Superior camera, bigger sensor size, 8k/4k video and many features.
  • For Budget-Conscious Users: Realme C51 - Decent basic functionality for everyday tasks.
  • For Heavy Multitaskers: Xiaomi 12 - High-end chipset, more RAM and optimized software makes it great for multitasking.
  • For casual media consumption: Realme C51 - Big screen and good battery life make it ideal for this.

My Choice

If I were choosing between these two, I would absolutely go with the Xiaomi 12. Here's why:

While the Realme C51 is a very good budget phone, the Xiaomi 12's overall experience is vastly superior. The Snapdragon 8 Gen 1 chipset is not only faster but is also more future proof, ensuring it'll perform smoothly for years. The AMOLED display with its high refresh rate is a joy to use, especially for someone like me who does a lot of reading on my phone. I am big on camera quality, the Xiaomi 12's sensor size, software and 8k video recording features are amazing. While the Realme has slightly bigger battery, the difference in battery is not that noticeable due to Xiaomi's optimized software and the 67W fast charging is a game-changer. All the premium features, like better build quality, wireless and reverse charging, and better audio, makes the price difference a very justifiable one. For me, the additional cost is worth the significant upgrade in performance, display, and camera quality.

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.