Oppo Reno6 5G vs Xiaomi 14 Ultra - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 11, 2021 February 22, 2024
Release Year 2021 2024

Physical

Volume 85.92 cm³ 111.81 cm³
Screen Size to Weight Ratio 3.53 "/g 2.93 "/g
Weight 182 g 229.5 g
Height 156.8 mm 161.4 mm
Width 72.1 mm 75.3 mm
Thickness 7.6 mm 9.2 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Titanium Gray
  • Black
  • Blue
  • White

Display

Screen Size 6.43 " 6.73 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.3 % 90 %
Pixel Density 409 PPI 522 PPI
Refresh Rate 90 Hz 120 Hz
Typical Brightness 430 nits 1000 nits
HBM Brightness 600 nits N/A
Peak Brightness 750 nits 3000 nits

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 110.39 mAh/in²
Battery Density 50.05 mAh/cm³ 44.72 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 900 (6 nm) Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520)
GPU Mali-G68 MC4 Adreno 750

Connectivity

USB Version 2.0 3.2
OTG Support 1 1
DisplayPort 1
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C 3.2, Gen 2, OTG, DisplayPort

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 12 18

Comparison Summary

Oppo Reno6 5G vs. Xiaomi 14 Ultra: A Detailed Comparison

1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GXiaomi 14 UltraReal-World Implications
Dimensions156.8 × 72.1 × 7.6 mm161.4 × 75.3 × 9.2 mmXiaomi is larger and heavier, making it less pocket-friendly but more premium. Oppo is slimmer and lighter, better for one-handed use.
Weight182g229.5gOppo is 47.5g lighter, making it more comfortable for long use.
Screen ProtectionGorilla Glass 5Gorilla Glass Victus 2Xiaomi has better drop resistance and scratch protection.
Water/Dust ResistanceNo official IP ratingIP68-rated (dust/waterproof)Xiaomi is significantly more durable in harsh conditions.

Display

FeatureOppo Reno6 5GXiaomi 14 UltraReal-World Implications
Size6.43" AMOLED6.73" AMOLEDXiaomi offers a bigger screen, better for media consumption.
Resolution1080x2400 (409 PPI)1440x3200 (522 PPI)Xiaomi has 77.8% more pixels, making text and images sharper.
Brightness1100 nits3000 nitsXiaomi is far superior in sunlight visibility, great for outdoor use.
Refresh Rate90Hz120HzXiaomi offers smoother scrolling and animations.

Performance

FeatureOppo Reno6 5GXiaomi 14 UltraReal-World Implications
ChipsetDimensity 900 (6nm)Snapdragon 8 Gen 3 (4nm)Xiaomi is far more powerful, better for gaming and multitasking.
AnTuTu Score815,2002,100,000Xiaomi is 158% faster, ensuring long-term smooth performance.
RAM Options8GB/12GB12GB/16GBXiaomi is better for heavy multitasking and future-proofing.
Storage128GB/256GB256GB/512GB/1TBXiaomi offers more storage, ideal for power users.

Camera

FeatureOppo Reno6 5GXiaomi 14 UltraReal-World Implications
Main Camera50MP (f/1.8, 1/1.56")50MP (f/1.63, 1")Xiaomi has a larger sensor and wider aperture, better in low light.
Telephoto Zoom13MP (2x zoom)50MP (3.2x optical, 120x digital)Xiaomi’s zoom is far superior for long-range shots.
Ultrawide16MP (f/2.2)50MP (f/1.8)Xiaomi’s ultrawide is higher quality.
Selfie Camera32MP (f/2.4)32MP (f/2.0)Xiaomi’s selfies should be brighter.
Video Recording4K@30fps8K@30fps, 4K@120fpsXiaomi supports 8K video, better for professionals.
DxOMark ScoreN/A149 (Photo: 144, Video: 150)Xiaomi ranks among the best camera phones.

Battery & Charging

FeatureOppo Reno6 5GXiaomi 14 UltraReal-World Implications
Capacity4500mAh5000mAhXiaomi has 11% more battery life.
Wired Charging65W90WXiaomi charges faster (0-100% in ~35 min).
Wireless ChargingNo80W wireless, 10W reverseXiaomi supports ultra-fast wireless charging.

2. Key Insights

Oppo Reno6 5G Strengths

Lighter and more compact (~182g vs. 229.5g) – better for daily comfort.
Affordable (older model, likely cheaper).
Decent camera setup (but no 8K video or periscope zoom).

Xiaomi 14 Ultra Strengths

Best-in-class camera (1" sensor, 8K video, periscope zoom).
Brighter, sharper 6.73" 120Hz AMOLED display.
Much faster chipset (Snapdragon 8 Gen 3) for gaming and AI tasks.
Bigger battery (5000mAh) with 90W wired + 80W wireless charging.

Trade-Offs

  • Xiaomi is heavier and bulkier – not ideal for small hands.
  • Oppo’s performance is outdated compared to Xiaomi’s flagship-level specs.

3. User Profiles & Recommendations

Who Should Buy the Oppo Reno6 5G?

Budget-conscious users who don’t need cutting-edge performance.
Lightweight phone lovers who prioritize comfort.
Casual photographers who don’t need pro-level zoom or video.

Who Should Buy the Xiaomi 14 Ultra?

Photography enthusiasts (best camera in its class).
Power users & gamers (Snapdragon 8 Gen 3 + 16GB RAM).
Media consumers (bright 6.73" 120Hz AMOLED).
Future-proof buyers (8K video, IP68, fast charging).

4. Buying Decision Framework

3 Questions to Help You Decide

  1. Do you need the best camera possible?Xiaomi 14 Ultra
  2. Do you prefer a lighter, more affordable phone?Oppo Reno6 5G
  3. Will you use 8K video, wireless charging, or gaming?Xiaomi 14 Ultra

Scenario-Based Recommendations

  • Best for Travel Photography?Xiaomi 14 Ultra (1" sensor, periscope zoom).
  • Best for Everyday Use?Oppo Reno6 5G (if you don’t need top-tier performance).
  • Best for Future-Proofing?Xiaomi 14 Ultra (Snapdragon 8 Gen 3, 16GB RAM).

Final Verdict: Which Would I Choose?

I’d pick the Xiaomi 14 Ultra.

Why?

  • The camera is unmatched—perfect for mobile photographers.
  • Snapdragon 8 Gen 3 ensures smooth performance for years.
  • 120Hz 1440p AMOLED + 3000 nits brightness = best display.
  • 80W wireless charging & IP68 make it a true flagship.

The Oppo Reno6 5G is good for casual users, but the Xiaomi 14 Ultra is a no-compromise powerhouse—worth the upgrade if budget allows.

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.