Oppo Reno6 5G vs Motorola Moto G51 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date June 11, 2021 December 16, 2021
Release Year 2021 2021

Physical

Volume 85.92 cm³ 118.69 cm³
Screen Size to Weight Ratio 3.53 "/g 3.27 "/g
Weight 182 g 208 g
Height 156.8 mm 170.5 mm
Width 72.1 mm 76.5 mm
Thickness 7.6 mm 9.1 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Indigo Blue
  • Bright Silver
  • Aqua Blue

Display

Screen Size 6.43 " 6.8 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.3 % 85.6 %
Pixel Density 409 PPI 387 PPI
Refresh Rate 90 Hz 120 Hz
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 108.13 mAh/in²
Battery Density 50.05 mAh/cm³ 42.13 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 900 (6 nm) Qualcomm SM4350-AC Snapdragon 480+ 5G (8 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (2x2.2 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
GPU Mali-G68 MC4 Adreno 619

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 11
Maximum OS Version 12 12

Comparison Summary

Oppo Reno6 5G vs. Motorola Moto G51 5G: Detailed Comparison & User-Focused Breakdown

1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
Dimensions156.8 × 72.1 × 7.6 mm170.5 × 76.5 × 9.1 mmReno6 is slimmer and lighter (182g vs. 208g), easier for one-handed use. Moto G51 is bulkier but may feel sturdier.
Screen ProtectionGorilla Glass 5Unknown (likely basic)Reno6 has better drop resistance, reducing cracks from accidental drops.
Fingerprint SensorBasic (likely under display)Side-mountedMoto G51’s sensor is faster, while Reno6’s is more seamless (if in-display).

Display

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
Size & Type6.43" AMOLED6.8" IPS LCDReno6 has richer colors, deeper blacks (AMOLED advantage). Moto G51 is bigger (better for media).
Refresh Rate90Hz120HzMoto G51 feels smoother in scrolling/gaming, but Reno6’s AMOLED compensates with better motion clarity.
Brightness1100 nits (peak)Unknown (likely ~500 nits)Reno6 is vastly better outdoors—easy to see in sunlight. Moto G51 may struggle in bright conditions.
PPI409 PPI387 PPIReno6 is slightly sharper, but difference is minor in daily use.

Performance

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
ChipsetMediatek Dimensity 900 (6nm)Snapdragon 480+ 5G (8nm)Reno6 is far more powerful, better for gaming & heavy apps. Moto G51 is entry-level.
Antutu Score815,200381,000Reno6 is 2x faster—multitasking is smoother, apps load quicker.
RAM & Storage8/12GB RAM, 128/256GB4/8GB RAM, 64/128GBReno6 has better future-proofing with more RAM/storage. Moto G51’s 4GB variant may feel sluggish.

Camera

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
Main Sensor50MP (Sony IMX766, 1/1.56")50MP (Samsung JN1, 1/2.76")Reno6 captures more light, better dynamic range & low-light shots.
Ultrawide16MP vs. 8MP8MPReno6’s ultrawide is sharper, less distortion.
Telephoto13MP (2x optical zoom)NoneReno6 offers true zoom, Moto G51 relies on digital crop.
Selfie Camera32MP (Sony IMX615)13MPReno6 is much better for selfies & video calls.
Video Recording4K@30fps, OIS1080p@60fps, no OISReno6 has better stabilization & 4K video—great for vlogging.

Battery & Charging

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
Capacity4500mAh5000mAhMoto G51 lasts longer, but Reno6 charges 6.5x faster (65W vs. 10W).
Battery TechLi-PolymerLi-IonLi-Polymer (Reno6) is slightly more efficient in heat management.

Connectivity & Extras

FeatureOppo Reno6 5GMotorola Moto G51 5GReal-World Implications
Wi-FiWi-Fi 6 (Faster speeds)Wi-Fi 5Reno6 will age better with next-gen routers.
Bluetooth5.2 (AptX, LDAC)5.1 (Basic codecs)Reno6 supports high-res wireless audio.
GPSMulti-band (More accurate)Standard GPSReno6 has better navigation precision.
AudioBasic speakerDolby Atmos (Better sound)Moto G51 has better multimedia audio.

2. Key Insights

Oppo Reno6 5G Strengths

Faster performance (2x benchmark score) – great for gaming & multitasking.
Superior camera system (larger sensor, 4K video, telephoto lens).
Better display (AMOLED, higher brightness, Gorilla Glass 5).
Much faster charging (65W vs. 10W).

Motorola Moto G51 5G Strengths

Bigger battery (5000mAh) for longer endurance.
120Hz screen (smoother scrolling).
Dolby Atmos speakers (better sound).

Trade-offs

  • Moto G51 is slower—fine for basics but struggles with heavy apps.
  • Reno6 has no expandable storage (but offers larger base storage).
  • Moto G51’s display is dimmer—harder to see in sunlight.

3. User Profiles & Recommendations

Best for Oppo Reno6 5G:

📸 Photography & Video Enthusiasts (better cameras, 4K video).
🎮 Gamers & Power Users (faster chipset, more RAM).
💼 Professionals (slimmer design, better display for work).

Best for Motorola Moto G51 5G:

🎧 Media Consumers (bigger screen, Dolby Atmos).
🔋 Battery Lifers (5000mAh lasts longer).
💰 Budget Buyers (likely cheaper, decent for basics).


4. Buying Decision Framework

Ask Yourself:

  1. Do you prioritize performance & cameras?Reno6.
  2. Do you need all-day battery & a big screen?Moto G51.
  3. Do you want fast charging & future-proofing?Reno6.

Scenario-Based Picks:

  • "I game and take lots of photos."Reno6.
  • "I watch Netflix and need long battery."Moto G51.
  • "I want the best all-rounder."Reno6 (unless budget is tight).

Final Verdict: What I’d Choose

Winner: Oppo Reno6 5G 🏆
The Reno6 is the clear choice unless you only care about battery life. It’s faster, has a better display, charges quicker, and takes far better photos—making it the better long-term investment. The Moto G51 is a solid budget 5G phone, but its performance and cameras hold it back.

If you want the best overall experience, go Reno6. If you just need a big screen with decent battery, the Moto G51 works.

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

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