Oppo Reno6 5G vs Xiaomi Redmi A3 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 11, 2021 February 23, 2024
Release Year 2021 2024

Physical

Volume 85.92 cm³ 106.58 cm³
Screen Size to Weight Ratio 3.53 "/g 3.48 "/g
Weight 182 g 193 g
Height 156.8 mm 168.3 mm
Width 72.1 mm 76.3 mm
Thickness 7.6 mm 8.3 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Midnight Black
  • Forest Green (Olive Green)
  • Star Blue (Lake Blue)

Display

Screen Size 6.43 " 6.71 "
Resolution 1080 x 2400 720 x 1650
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 88.3 % 82.9 %
Pixel Density 409 PPI 268 PPI
Refresh Rate 90 Hz 90 Hz
Typical Brightness 430 nits N/A
HBM Brightness 600 nits 500 nits
Peak Brightness 750 nits N/A

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 111.05 mAh/in²
Battery Density 50.05 mAh/cm³ 46.91 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 900 (6 nm) Mediatek Helio G36 (12 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (4x2.2 GHz Cortex-A53 & 4x1.6 GHz Cortex-A53)
GPU Mali-G68 MC4 PowerVR GE8320

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 14
Maximum OS Version 12

Comparison Summary

Oppo Reno6 5G vs. Xiaomi Redmi A3: In-Depth Comparison

These two phones cater to different audiences—while the Oppo Reno6 5G is a mid-range device with premium features, the Xiaomi Redmi A3 is an ultra-budget phone with modest specs. Here’s a detailed breakdown to help you decide which one fits your needs.


1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GXiaomi Redmi A3Real-World Implications
Dimensions156.8 × 72.1 × 7.6 mm168.3 × 76.3 × 8.3 mmReno6 5G is more compact and slimmer, easier for one-hand use.
Weight182g193gReno6 feels lighter (~11g difference).
Screen ProtectionGorilla Glass 5Gorilla Glass 3Reno6 is more durable against drops/scratches.
Fingerprint SensorBasic opticalSide-mountedRedmi A3’s placement is more convenient, but neither is a standout.

Display

FeatureOppo Reno6 5GXiaomi Redmi A3Real-World Implications
Size6.43" AMOLED6.71" IPS LCDRedmi A3 has a bigger screen, but Reno6 has better quality.
Resolution1080x2400 (409 PPI)720x1650 (268 PPI)Reno6 is vastly sharper—text and media look much clearer.
Brightness1100 nits (peak)Not specified (likely dim)Reno6 is far better outdoors—easier to see in sunlight.
Refresh Rate90Hz90HzSame smoothness, but AMOLED on Reno6 feels more responsive.

Performance

FeatureOppo Reno6 5GXiaomi Redmi A3Real-World Implications
ChipsetDimensity 900 (6nm)Helio G36 (12nm)Reno6 is significantly faster—better for gaming & multitasking.
AnTuTu Score815,200127,000Reno6 is ~6x more powerful—future-proof for apps & games.
RAM8GB/12GB3GB/4GB/6GBReno6 handles heavy apps better—Redmi A3 is for light users.
Storage128GB/256GB (No SD)64GB/128GB (No SD)Reno6 offers more space, but neither has expandable storage.

Camera

FeatureOppo Reno6 5GXiaomi Redmi A3Real-World Implications
Main Camera50MP (Sony IMX766)8MP (basic sensor)Reno6’s camera is vastly superior—better detail, low-light.
Ultrawide16MP (useful for landscapes)NoneReno6 has more versatility—great for group shots & scenery.
Selfie Camera32MP (f/2.4)5MP (f/2.2)Reno6 takes much sharper selfies—better for video calls.
Video4K@30fps, 1080p@60fps1080p@30fps (no stabilization)Reno6 is much better for recording—smoother, higher quality.

Battery & Charging

FeatureOppo Reno6 5GXiaomi Redmi A3Real-World Implications
Capacity4500mAh5000mAhRedmi A3 lasts longer, but Reno6 charges much faster.
Charging65W fast charging10W slow chargingReno6 charges fully in ~30 mins vs. ~2+ hours for Redmi A3.

2. Key Insights

Oppo Reno6 5G Strengths:

Premium display (AMOLED, 1080p, 90Hz) – better for media & gaming.
Powerful performance (Dimensity 900, 8GB+ RAM) – handles heavy tasks well.
Superior camera system (50MP main + ultrawide + macro) – great for photography.
Blazing-fast charging (65W) – charges fully in half an hour.

Xiaomi Redmi A3 Strengths:

Bigger display (6.71") – better for videos but lower resolution.
Larger battery (5000mAh) – longer endurance for light users.
Newer Android version (Android 14 vs. Android 11/12) – likely longer support.

Trade-Offs & Limitations:

Redmi A3’s performance is weak – struggles with demanding apps/games.
Camera quality is poor (8MP main, no ultrawide/macro).
Reno6 5G is older (2021 vs. 2024) – may lose software updates sooner.


3. User Profiles & Recommendations

Best For Oppo Reno6 5G:

📱 Power users (gaming, multitasking).
📸 Photography lovers (50MP + ultrawide).
Fast-charge seekers (65W is a game-changer).

Best For Xiaomi Redmi A3:

📱 Budget buyers (lower price).
🔋 Long battery life needed (5000mAh).
🔄 Basic users (calls, social media, light browsing).


4. Buying Decision Framework

Ask Yourself:

  1. Do you care about camera quality?Oppo Reno6 5G (far better cameras).
  2. Do you need long battery life but don’t mind slow charging?Redmi A3.
  3. Do you play games or use demanding apps?Oppo Reno6 5G.

Scenario Recommendations:

  • Gamer/Content Creator?Reno6 5G (performance + cameras).
  • Casual User on a Budget?Redmi A3 (basic needs, long battery).
  • Photographer/Social Media Enthusiast?Reno6 5G (best camera in class).

Final Verdict: Which Would I Choose?

I’d pick the Oppo Reno6 5G. Despite being older, it outperforms the Redmi A3 in almost every way—display, performance, cameras, and charging speed.

The Redmi A3 is only worth it if budget is the #1 priority—but for just a bit more money, the Reno6 5G delivers a dramatically better experience.

Winner: Oppo Reno6 5G. 🏆

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.