Oppo Reno6 5G vs Oppo A55 - Detailed Phone Comparison

Detailed Comparison

Specification
Oppo A55
Oppo A55
Oppo

General

Launch Date June 11, 2021 October 1, 2021
Release Year 2021 2021

Physical

Volume 85.92 cm³ 104.03 cm³
Screen Size to Weight Ratio 3.53 "/g 3.37 "/g
Weight 182 g 193 g
Height 156.8 mm 163.6 mm
Width 72.1 mm 75.7 mm
Thickness 7.6 mm 8.4 mm
Foldable Design No No
Available Colors
  • Blue
  • Aurora
  • Purple
  • Stellar Black
  • Green
  • Starry Black
  • Rainbow Blue

Display

Screen Size 6.43 " 6.51 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.3 % 82.6 %
Pixel Density 409 PPI 270 PPI
Refresh Rate 90 Hz N/A
Typical Brightness 430 nits 480 nits
HBM Brightness 600 nits N/A
Peak Brightness 750 nits 550 nits

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 117.98 mAh/in²
Battery Density 50.05 mAh/cm³ 48.06 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes Yes
Chipset Mediatek Dimensity 900 (6 nm) Mediatek MT6765G Helio G35 (12 nm)
CPU Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU Mali-G68 MC4 PowerVR GE8320

Connectivity

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

Software

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

Comparison Summary

Oppo Reno6 5G vs. Oppo A55: The Ultimate Mid-Range Showdown

Choosing between these two Oppo devices comes down to priorities: premium performance and camera capabilities versus battery endurance and budget-friendliness. Here’s a structured breakdown to help you decide.


1. Specifications Breakdown

Design & Build

FeatureOppo Reno6 5GOppo A55Real-World Implications
Dimensions156.8 × 72.1 × 7.6 mm163.6 × 75.7 × 8.4 mmReno6 is slimmer and more compact, easier for one-handed use. A55 is bulkier but may feel sturdier.
Weight182g193gReno6 is 11g lighter—noticeable in pockets or prolonged use.
Screen ProtectionGorilla Glass 5UnknownReno6 has better drop resistance, crucial for accidental slips.
Fingerprint SensorBasic (under-display)Side-mountedA55’s sensor may be faster and more accessible while holding.

Takeaway: Reno6 wins in premium feel and durability, while A55 offers slightly better ergonomics with its side-mounted fingerprint sensor.


Display

FeatureOppo Reno6 5GOppo A55Real-World Implications
Panel TypeAMOLEDIPS LCDReno6 has deeper blacks, better contrast, and vibrant colors—ideal for media consumption.
Resolution1080×2400 (409 PPI)720×1600 (270 PPI)Reno6 is sharper—text looks crisper, images more detailed.
Refresh Rate90Hz60HzReno6 feels smoother in scrolling and animations.
Brightness1100 nits (peak)Not specifiedReno6 is far superior in sunlight visibility.

Takeaway: If display quality matters (for gaming, videos, or reading), the Reno6 is the clear winner.


Performance

FeatureOppo Reno6 5GOppo A55Real-World Implications
ChipsetDimensity 900 (6nm)Helio G35 (12nm)Reno6 is much faster—better for gaming, multitasking, and future-proofing.
AnTuTu Score815,200379,800Over twice as powerful—Reno6 handles demanding apps easily.
GPUMali-G68 MC4PowerVR GE8320Reno6 is better for gaming (Genshin Impact, COD Mobile at higher settings).
RAM Options8GB / 12GB6GB / 8GBReno6 offers better multitasking—fewer app reloads.

Takeaway: Reno6 is the performance king—ideal for gamers and power users. A55 is better suited for light tasks (social media, calls, casual games).


Camera

FeatureOppo Reno6 5GOppo A55Real-World Implications
Main Sensor50MP (Sony IMX766)13MPReno6 captures sharper, more detailed photos, especially in low light (f/1.8 vs. f/2.2).
Ultra-Wide16MPNoneReno6 offers versatility for landscapes and group shots.
Telephoto13MP (2x zoom)NoneReno6 has optical zoom—better portrait shots.
Selfie32MP8MPReno6 is far superior for selfies and video calls.
Video4K@30fps, 1080p@60fps1080p@30fpsReno6 is better for video creators (smoother, higher resolution).

Takeaway: If photography is a priority, Reno6 is vastly superior, while A55 is sufficient for basic shots.


Battery & Charging

FeatureOppo Reno6 5GOppo A55Real-World Implications
Capacity4500mAh5000mAhA55 has longer endurance—better for heavy users.
Charging Speed65W SuperVOOC 2.010WReno6 charges in ~30 mins vs. ~2+ hours for A55.

Takeaway: A55 wins in battery life, but Reno6 makes up for it with ultra-fast charging.


2. Key Insights

Oppo Reno6 5G Strengths:

Superior display (AMOLED, 90Hz, brighter)
Much faster performance (Dimensity 900, 2x benchmark score)
Better camera setup (50MP main, ultra-wide, telephoto)
65W fast charging (game-changer for power users)

Oppo A55 Strengths:

Longer battery life (5000mAh)
More affordable (likely better value for budget buyers)
Side-mounted fingerprint sensor (easier access)

Trade-Offs:

  • Reno6 sacrifices some battery life for performance and charging speed.
  • A55 lacks high-end screen, performance, and cameras but compensates with endurance.

3. User Profiles & Recommendations

Choose the Oppo Reno6 5G if you:

Want flagship-like performance for gaming and multitasking.
Prioritize camera quality (selfies, zoom, low-light shots).
Need a premium display (AMOLED, 90Hz).
Appreciate fast charging (65W fills up in 30 mins).

Choose the Oppo A55 if you:

Need all-day battery life (5000mAh lasts longer).
Are on a tighter budget (likely cheaper).
Only need basic performance (social media, calls, light apps).


4. Buying Decision Framework

Ask yourself:

  1. "Do I care more about performance or battery life?"

    • Performance → Reno6
    • Battery → A55
  2. "Will I shoot a lot of photos/videos?"

    • Yes → Reno6
    • No → A55
  3. "Is fast charging a priority for me?"

    • Yes → Reno6 (65W is a game-changer)
    • No → A55 (still decent charging)

Scenario-Based Recommendations:

  • Student on a budget? A55 (long battery, good enough for lectures and social media).
  • Mobile gamer/content creator? Reno6 (smooth display, powerful chipset, great cameras).
  • Casual user who hates charging? A55 (5000mAh lasts all day).

Final Verdict: Which Would I Choose?

I would pick the Oppo Reno6 5G.

Why?

  • The AMOLED 90Hz display is a massive upgrade over the A55’s LCD panel.
  • The Dimensity 900 chipset ensures smooth performance for years.
  • The 50MP Sony IMX766 camera is far superior for photography.
  • 65W charging means I’m never stuck waiting for a full charge.

If budget is a concern, the A55 is a great alternative, but for just ~3 months newer and significantly weaker specs, the Reno6 5G offers better long-term value.

Final Thought: If you can afford the Reno6, it's the better investment. If you just need a reliable daily driver, the A55 is solid.


What’s your priority—performance or battery life? Let me know in the comments! 🚀

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.