Oppo Reno6 5G vs Xiaomi Redmi 12 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 11, 2021 August 4, 2023
Release Year 2021 2023

Physical

Volume 85.92 cm³ 105.49 cm³
Screen Size to Weight Ratio 3.53 "/g 3.41 "/g
Weight 182 g 199 g
Height 156.8 mm 168.6 mm
Width 72.1 mm 76.3 mm
Thickness 7.6 mm 8.2 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Moonstone Silver
  • Jade Black
  • Pastel Blue

Display

Screen Size 6.43 " 6.79 "
Resolution 1080 x 2400 1080 x 2460
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 88.3 % 85.1 %
Pixel Density 409 PPI 396 PPI
Refresh Rate 90 Hz 90 Hz
Typical Brightness 430 nits 550 nits
HBM Brightness 600 nits N/A
Peak Brightness 750 nits N/A

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 108.45 mAh/in²
Battery Density 50.05 mAh/cm³ 47.4 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes No
Chipset Mediatek Dimensity 900 (6 nm) Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
GPU Mali-G68 MC4 Adreno 613

Connectivity

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

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 12 14

Comparison Summary

Oppo Reno6 5G vs. Xiaomi Redmi 12 5G: In-Depth Comparison

With two capable mid-range 5G phones on the table, each has distinct strengths. The Oppo Reno6 5G leans into premium design, superior display quality, and camera versatility, while the Xiaomi Redmi 12 5G offers a larger screen, bigger battery, and a more modern OS. Let’s break them down.


1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
Dimensions156.8 × 72.1 × 7.6mm168.6 × 76.3 × 8.2mmReno6 is slimmer & lighter (182g vs. 199g), easier for one-handed use. Redmi 12 is larger, which may suit media consumers.
Screen ProtectionGorilla Glass 5Gorilla Glass 3Reno6 has better drop & scratch resistance.
Fingerprint SensorUnder-displaySide-mountedReno6’s under-display sensor is sleeker; Redmi’s is quicker but less premium.

Display

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
Size & Tech6.43" AMOLED6.79" IPS LCDReno6 has deeper blacks, vibrant colors, better sunlight visibility (1100 nits). Redmi 12 offers larger screen size but inferior contrast.
Refresh Rate90Hz90HzBoth smooth for daily tasks, though AMOLED feels more fluid.
Resolution1080x2400 (409 PPI)1080x2460 (396 PPI)Nearly identical sharpness, but AMOLED makes Reno6’s display pop more.

Performance

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
ChipsetDimensity 900 (6nm)Snapdragon 4 Gen 2 (4nm)Snapdragon 4 Gen 2 is newer & more power-efficient, but Dimensity 900 is faster in benchmarks (79% higher AnTuTu score).
RAM Options8GB / 12GB4GB / 6GB / 8GBReno6’s 12GB variant is better for heavy multitasking/gaming.
Storage128/256GB (no SD)128/256GB (no SD)Identical storage, but neither supports expandable storage.

Cameras

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
Main Camera50MP (Sony IMX766)50MP (basic sensor)Reno6 has a superior sensor (better low light, dynamic range).
Ultrawide16MP (f/2.2)NoneReno6 has better versatility for landscapes/group shots.
Telephoto13MP (2x zoom)NoneReno6 can zoom optically, unlike Redmi 12.
Selfie Camera32MP (Sony IMX615)5MP (basic)Reno6’s selfies are much sharper and more detailed.
Video Recording4K@30fps1080p@30fpsReno6 offers 4K video, great for content creators.

Battery & Charging

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
Capacity4500mAh5000mAhRedmi 12 lasts longer per charge, but Reno6 charges 3.6x faster (65W vs. 18W).
Charging Speed65W (full in ~30min)18W (slow charging)Reno6 is much more convenient for quick top-ups.

Software & Extras

FeatureOppo Reno6 5GXiaomi Redmi 12 5GReal-World Implications
OS & UpdatesAndroid 11 (up to 12)Android 13 (up to 14)Redmi 12 has a newer OS & longer update support.
WiFi/BluetoothWiFi 6, BT 5.2WiFi 5, BT 5.0Reno6 has faster, more stable wireless connections.
GPSMore satellite supportBasic GPS/GLONASSReno6 offers better location accuracy in challenging areas.

2. Key Insights

Oppo Reno6 5G Wins If You Want:

Premium display (AMOLED, 1100 nits brightness)
Better cameras (ultrawide + telephoto, 4K video, superior selfies)
Faster performance (better chipset, 79% higher benchmark score)
Faster charging (65W vs. 18W)
Sleeker, lighter design (better in-hand feel)

Xiaomi Redmi 12 5G Wins If You Want:

Bigger screen (6.79" vs. 6.43")
Longer battery life (5000mAh vs. 4500mAh)
Newer OS (Android 13 vs. 11)
More affordable (likely a lower price given Redmi’s positioning)


3. User Profiles & Recommendations

Best for Power Users & Creators: Oppo Reno6 5G

If you prioritize performance, cameras, and display quality, the Reno6 is the clear winner. The AMOLED screen, 4K video, and faster chipset make it ideal for:

  • Mobile photographers & videographers
  • Gamers & multitaskers
  • Users who want premium build & fast charging

Best for Budget Buyers & Media Consumers: Xiaomi Redmi 12 5G

If you prefer a big screen, long battery life, and a lower price, the Redmi 12 is a solid pick. Great for:

  • Movie/TV show watchers (big display)
  • Casual users (longer battery, decent performance)
  • Budget-conscious buyers (likely cheaper)

4. Buying Decision Framework

Ask Yourself:

  1. "Do I care more about camera quality or battery life?"
    • Reno6 for photography, Redmi 12 for endurance.
  2. "Do I want a premium AMOLED display or a larger LCD screen?"
    • Reno6 for vibrancy, Redmi 12 for size.
  3. "Is fast charging or a newer OS more important?"
    • Reno6 for charging speed, Redmi 12 for software support.

Scenario-Based Picks:

  • Gamer/Photographer?Reno6 5G (better GPU, cameras)
  • Budget Netflix Binger?Redmi 12 5G (bigger screen, longer battery)
  • Future-Proofing?Redmi 12 5G (newer OS, likely longer updates)

Final Verdict: Which Would I Choose?

I’d pick the Oppo Reno6 5G.

Why? The AMOLED display, superior cameras, and faster charging make it a much more well-rounded device. The Dimensity 900’s performance advantage ensures smoother gaming and multitasking, while the 65W charging is a game-changer for daily use.

That said, if you only care about screen size, battery life, and price, the Redmi 12 5G is a solid budget alternative. But for most users, the Reno6 5G delivers better overall value despite being slightly older.

Bottom Line: If you can find the Reno6 at a good price, it’s the better phone—unless you really need the extra battery and screen size of the Redmi 12.

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.