Nokia C21 Plus vs Realme C51 - Detailed Phone Comparison

Detailed Comparison

Specification
Realme C51
Realme C51
Realme

General

Launch Date April 29, 2022 August 1, 2023
Release Year 2022 2023

Physical

Volume 107.57 cm³ 102.59 cm³
Screen Size to Weight Ratio 3.66 "/g 3.62 "/g
Weight 178 g 186 g
Height 164.8 mm 167.2 mm
Width 75.9 mm 76.7 mm
Thickness 8.6 mm 8 mm
Foldable Design No No
Available Colors
  • Dark Cyan
  • Warm Gray
  • Mint Green
  • Carbon Black

Display

Screen Size 6.52 " 6.74 "
Resolution 720 x 1600 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 82.1 % 85.5 %
Pixel Density 269 PPI 260 PPI
Refresh Rate N/A 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 560 nits

Hardware

Battery Capacity per Screen Area 118.79 mAh/in² 110.07 mAh/in²
Battery Density 46.95 mAh/cm³ 48.74 mAh/cm³
Battery Capacity 5050 mAh 5000 mAh
NFC Support No Yes
Chipset Unisoc SC9863A (28 nm) Unisoc Tiger T612 (12 nm)
CPU Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55) Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU IMG8322 Mali-G57

Connectivity

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

Software

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

Comparison Summary

Okay, let's dive deep into the specifications of the Nokia C21 Plus and Realme C51, and see what they mean for you, the user. I'll break it down, focusing on real-world performance and everyday usability.

1. Specifications Breakdown

Here’s a detailed table comparing the key specifications, focusing on what they mean in practice:

FeatureNokia C21 PlusRealme C51Real-World Implications
DESIGN
Dimensions164.8 x 75.9 x 8.6 mm167.2 x 76.7 x 8 mmRealme is slightly taller and thinner. Nokia is a bit more compact in the hand.
Weight178g186gNokia feels slightly lighter, which may be preferred for extended usage.
DISPLAY
Size6.52"6.74"Realme offers a more immersive viewing experience with a larger screen.
Resolution720x1600720x1600Both provide decent clarity for everyday tasks, but neither are high-definition.
Pixel Density269 PPI260 PPIVisually, both appear very similar, offering acceptable sharpness.
TechnologyIPS LCDIPS LCDStandard LCD for both, with good color reproduction.
Refresh Rate60Hz90HzRealme offers smoother scrolling and animations.
Brightness0 nits0 nitsBrightness is missing, making outdoor readability difficult to assess.
PERFORMANCE
ChipsetUnisoc SC9863A (28 nm)Unisoc Tiger T612 (12 nm)Realme uses a more efficient chipset that will perform better in terms of battery and general speed.
AnTuTu Score109,200220,000Realme is significantly faster, better for multitasking, gaming, and quicker app loading.
GPUIMG8322Mali-G57Realme's GPU provides superior graphics performance.
CAMERA
Main Camera13MP50MP (f/1.8)Realme captures far more detailed images.
Selfie Camera5MP (f/2.2)5MP (f/2.2)Similar front-facing cameras for both in terms of specs, but different sensor implementations may cause a difference in results.
Depth Camera2MPNoneNokia includes a depth sensor for better portrait effects, however, this does not guarantee the best result.
Video1080p@30fps1080p@30fpsBoth record good quality videos for social media.
FeaturesContinuous Shooting, Front FlashDigital Image StabilizationNokia offers extra shooting modes and has a front flash, whereas the Realme focuses on video and stability.
BATTERY LIFE
Capacity4000mAh5000mAhRealme will likely last significantly longer on a single charge.
Charging10W33WRealme charges far more quickly, reducing downtime.
SOFTWARE
OSAndroid 11Android 13Realme has a newer, potentially more feature-rich operating system.
CONNECTIVITY
Wi-Fi802.11n802.11ac, Dual band, MiMoRealme has more advanced Wi-Fi capabilities.
Bluetooth4.2 LE5.0 LE, LDAC, SBC, AACRealme offers a more modern and higher-fidelity Bluetooth connection.
STORAGE
Internal32/64GB64/128/256GBRealme offers more internal storage for apps and media.
RAM2/4GB4/6GBRealme enables smoother multitasking with more RAM.
ExpandableNoNoNeither phone supports microSD cards.
SECURITY
FeaturesRear-mounted fingerprint sensorSide-mounted fingerprint sensorSide-mounted sensors are generally more convenient to use.

2. Key Insights

Nokia C21 Plus:

  • Strengths: More compact design which is ideal for those who like smaller phones, includes a depth sensor and flash for better selfies.
  • Competitive Advantages: More affordable option for those on a tight budget.
  • Trade-offs: Older chipset and OS, less RAM and internal storage and a smaller battery.
  • Everyday User Experience: Suitable for basic tasks like browsing, calls, and texting, but will struggle with more demanding apps and multitasking. The older OS may mean slower updates.

Realme C51:

  • Strengths: Faster processor, larger and smoother display, longer battery life, much faster charging, better main camera, newer Android version, more RAM and storage, side-mounted fingerprint sensor, and enhanced connectivity features.
  • Competitive Advantages: Significant performance advantage in all areas over the Nokia.
  • Trade-offs: Larger and heavier. No depth camera or front flash.
  • Everyday User Experience: Ideal for users who need a responsive phone for social media, casual gaming, media consumption, and smooth multitasking.

3. User Profiles and Recommendations

Nokia C21 Plus is best for:

  • Budget-conscious users who need a basic smartphone for essential tasks.
  • Those who prefer smaller and lighter devices.
  • First-time smartphone buyers looking for an affordable and easy-to-use device.
  • Users who do not need high-end performance and are not planning to do heavy multitasking.

Realme C51 is best for:

  • Users who want a smoother and more responsive experience.
  • People who consume a lot of media on their phones.
  • Casual gamers who want better graphics performance.
  • Those who need a long-lasting battery with quick charging.
  • Users who prefer a modern operating system and more memory.

4. Buying Decision Framework

To decide between these two, ask yourself these questions:

  1. Performance vs. Budget: How much does responsiveness matter to you? Are you willing to pay more for a smoother experience?
  2. Battery Needs: How important is it to have long battery life? Do you need fast charging?
  3. Camera Usage: Do you primarily want great pictures or do you mostly use the camera for quick snaps and social media?

Scenario-Based Recommendations:

  • Scenario 1: Budget is the primary concern: Choose the Nokia C21 Plus as it is a more budget friendly device.
  • Scenario 2: Smooth performance is a necessity: The Realme C51 is a far better choice due to its powerful processor and RAM.
  • Scenario 3: You are a power user who needs to use apps all day and multi-task: Choose the Realme C51 for its larger battery, faster charging, and ample RAM and storage.
  • Scenario 4: You only need the basics, like making calls, texting, and simple web browsing and want a smaller device: Choose the Nokia C21 Plus.

My Choice

If I were choosing between these two phones, I would without a doubt go with the Realme C51. It offers a significantly superior experience across almost every metric. The faster processor, larger and smoother display, longer battery life with fast charging, and much better camera make it a more compelling device. While the Nokia is cheaper, I think the performance gap is just too large to ignore. The Realme C51 simply offers a far more modern and capable experience for its price, aligning better with the needs of most users today. The extra RAM, storage and newer OS add to its longevity, making it a worthwhile investment for everyday use.

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.