Oppo Reno6 5G vs Nokia C21 Plus - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 11, 2021 April 29, 2022
Release Year 2021 2022

Physical

Volume 85.92 cm³ 107.57 cm³
Screen Size to Weight Ratio 3.53 "/g 3.66 "/g
Weight 182 g 178 g
Height 156.8 mm 164.8 mm
Width 72.1 mm 75.9 mm
Thickness 7.6 mm 8.6 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Dark Cyan
  • Warm Gray

Display

Screen Size 6.43 " 6.52 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.3 % 82.1 %
Pixel Density 409 PPI 269 PPI
Refresh Rate 90 Hz N/A
Typical Brightness 430 nits N/A
HBM Brightness 600 nits N/A
Peak Brightness 750 nits N/A

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 118.79 mAh/in²
Battery Density 50.05 mAh/cm³ 46.95 mAh/cm³
Battery Capacity 4300 mAh 5050 mAh
NFC Support Yes No
Chipset Mediatek Dimensity 900 (6 nm) Unisoc SC9863A (28 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
GPU Mali-G68 MC4 IMG8322

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 microUSB 2.0

Software

Operating System Android Android
Initial OS Version 11 11
Maximum OS Version 12

Comparison Summary

Oppo Reno6 5G vs. Nokia C21 Plus: In-Depth Comparison

1. Specifications Breakdown

Design & Build Quality

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
Dimensions156.8 × 72.1 × 7.6 mm164.8 × 75.9 × 8.6 mmThe Reno6 is sleeker and more compact, easier for one-handed use.
Weight182g178gVirtually identical—no noticeable difference in hand feel.
Screen ProtectionGorilla Glass 5Basic protectionOppo is more resistant to scratches and drops.
DurabilityNo IP ratingNo IP ratingNeither is water-resistant.

Display

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
Size6.43" AMOLED6.52" IPS LCDSimilar size, but AMOLED offers deeper blacks and vivid colors.
Resolution1080x2400 (409 PPI)720x1600 (269 PPI)Reno6’s display is much sharper—better for media & gaming.
Refresh Rate90Hz60HzSmoother scrolling, better gaming experience on Reno6.
Brightness1100 nits (peak)UnknownOppo is far better in sunlight visibility.

Performance

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
ChipsetMediatek Dimensity 900 (6nm)Unisoc SC9863A (28nm)Oppo is far more powerful, better for multitasking and gaming.
RAM Options8GB / 12GB2GB / 4GBNokia struggles with heavy apps; Oppo handles gaming & multitasking with ease.
Storage128GB / 256GB32GB / 64GBNokia’s storage fills up quickly; Reno6 offers ample space.
GPUMali-G68 MC4IMG8322 (PowerVR GE8322)Oppo’s GPU is 6x faster, better for 3D games.

Camera

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
Main Camera50MP (Sony IMX766, f/1.8)13MP (basic sensor)Oppo’s camera is far superior—better low-light, detail, and dynamic range.
Ultrawide16MPNoneReno6 lets you capture wider scenes (landscapes, group shots).
Telephoto13MP (2x optical zoom)NoneZoomed shots look better on Oppo.
Selfie Camera32MP (Sony IMX615)5MPOppo is vastly better for selfies and video calls.
Video Recording4K @ 30fps, 1080p @ 60fps1080p @ 30fpsOppo supports high-quality vlogging with stabilization.

Battery & Charging

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
Battery Capacity4500mAh4000mAhOppo lasts slightly longer.
Charging Speed65W fast charging10W chargingOppo charges 6.5x faster (0-100% in ~30 mins vs. ~2hrs).

Software & Connectivity

FeatureOppo Reno6 5GNokia C21 PlusReal-World Implications
OSAndroid 11 (upgradable to 12)Android 11 (Go Edition)Nokia runs a stripped-down OS for low-end hardware.
WiFi/BluetoothWiFi 6, BT 5.2WiFi 4, BT 4.2Oppo supports faster WiFi and better Bluetooth audio.
GPS AccuracyMulti-band (L1+L5)Basic GPS/GLONASSOppo has better location tracking.

2. Key Insights

Oppo Reno6 5G Strengths

Faster performance (6x benchmark score vs. Nokia)
Superior display (AMOLED, 90Hz, 1080p)
Much better cameras (50MP main, 32MP selfie, 4K video)
Blazing-fast charging (65W vs. 10W)
More storage & RAM

Nokia C21 Plus Strengths

Lower price (budget-friendly)
Slightly lighter (but negligible difference)
Simplified OS (Android Go)—good for basic use

Trade-offs

Nokia C21 Plus is underpowered—struggles with multitasking.
Basic display & camera—mediocre for media consumption.
No fast charging—takes hours to recharge.


3. User Profiles & Recommendations

Best for Oppo Reno6 5G:

Power users (gamers, photographers, multitaskers).
Media lovers (AMOLED + high-res screen).
People who hate slow charging (65W is a game-changer).

Best for Nokia C21 Plus:

Budget buyers (if you only need calls, texts, light browsing).
Minimalists (Android Go is lightweight for basic tasks).


4. Buying Decision Framework

Ask yourself:

  1. Do you care about camera & display quality?Oppo Reno6 5G
  2. Do you need fast performance & multitasking?Oppo Reno6 5G
  3. Are you on a tight budget & only need basic functions?Nokia C21 Plus

Scenario-Based Picks:

  • "I want the best mid-range phone."Oppo Reno6 5G
  • "I just need a cheap backup phone."Nokia C21 Plus
  • "I take lots of photos & videos."Oppo Reno6 5G

Final Verdict: Which One Would I Choose?

My Pick: Oppo Reno6 5G

The Oppo Reno6 5G is the clear winner in almost every category:
Better performance (6x faster, smoother gaming).
Superior AMOLED display (90Hz, crisp colors).
Professional-grade camera system (50MP + 4K video).
65W fast charging (saves so much time).

The Nokia C21 Plus is only worth considering if you're on a tight budget and don’t care about performance or camera quality. Otherwise, the Reno6 5G is the far better long-term investment.

If you can afford it—go for the Oppo. 🚀

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.