Galaxy S21 5G vs Oppo A5x 5G

Direct side-by-side battle analyzing hardware specifications, benchmark percentiles, battery endurance, and category performance advantages.

Smartphone Battle

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Samsung · 2021

Galaxy S21 5G

81/ 100

Launch MSRP$799 USD

Oppo

Oppo A5x 5G

81/ 100

Launch MSRPPricing on request

WHO WINS WHERE

WHY IS Oppo A5x 5G BETTER THAN Galaxy S21 5G?

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Galaxy S21 5G

Oppo A5x 5GWinner 🏆

BIGGEST HARDWARE DIFFERENCES

Margin Delta

SPEC FACTOR	Galaxy S21	Oppo A5x	LEADER
Refresh Rate	120Hz	120Hz	120Hz
Battery Capacity	4,000 mAh	6,000 mAh	+6,000 mAh
Wired Fast Charging	25W	Standard	25W
Main Camera Sensor	64 MP	50 MP	64 MP
Screen Display Size	6.2"	6.67"	6.67"
Chassis Weight	169g	N/A	169g Lightest

Compare All 177+ Specifications Below↓

Which Phone Should You Buy: Key Reasons & Hardware Advantages

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Reasons to buy Galaxy S21 5G:

✓830g lighter chassis (169g) optimized for one-handed ergonomics
✓$9200 lower launch MSRP ($799 vs $9999)
✓64MP primary camera sensor with 4K/120fps video recording

Reasons to buy Oppo A5x 5G:

✓Larger 6,000 mAh battery capacity (+2,000 mAh more capacity)
✓50MP primary camera sensor with 4K/120fps video recording
✓6.67" display with 120Hz ProMotion refresh rate

How Do the Specifications Compare Side-by-Side?

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Specification	Galaxy S21 5G	Oppo A5x 5G
1. Display & Screen🏆 Galaxy S21 5G Wins Display
Screen Type & Tech	Dynamic AMOLED 2X	AMOLED
Screen Size	6.2"	6.67"
Resolution & Density	2400x1080 (421 ppi)	FHD+ / LTPO AMOLED
Refresh Rate	120 Hz ProMotion	120 Hz ProMotion
Brightness	1,300 nits peak	N/A
Screen Protection	Scratch-resistant glass	Scratch-resistant glass
2. Platform & Performance🏆 Galaxy S21 5G Wins Performance
Chipset / Processor	High performance SoC	Dimensity 6300
CPU Cores	Multi-core high performance	Multi-core high performance
GPU Graphics	Integrated Graphics	Integrated Graphics
Operating System	Android 11	Android
3. Memory & Storage
RAM Memory	8 GB LPDDR	6 GB LPDDR
Internal Storage	128GB / 256GB	128 GB
Storage Speed	High-speed flash	High-speed flash
Card Slot	No	No
4. Main Camera Optics🏆 Galaxy S21 5G Wins Camera
Primary Camera	64 MP, f/1.8, OIS	50 MP, Triple Camera System
Telephoto Zoom	10 MP (3x optical zoom), f/2.4, OIS	None (Digital zoom only)
Ultrawide Camera	12 MP, f/2.2	N/A
LiDAR / Depth	None	None
5. Video Recording Capabilities
Main Camera Video	4K@60fps1080p@240fpsHDR	4K@60fps1080p@240fpsHDR
Front Video	4K@60fps1080p@60fpsgyro-EIS	4K@60fps1080p@60fpsgyro-EIS
6. Selfie Camera
Selfie Lens	10 MP, f/2.2	12 MP
7. Body & Dimensions🏆 Galaxy S21 5G Lightest Chassis
Dimensions	151.7 x 71.2 x 7.9 mm	N/A
Weight	169 g	N/A
Build Materials	Glass front, metal/glass frame	Glass front, metal/glass frame
SIM Type	Nano-SIM / eSIM support	Nano-SIM / eSIM support
Water Resistance	IP68	Not certified
8. Battery & Charging🏆 Oppo A5x 5G Wins Battery
Battery Capacity	4,000 mAh	6,000 mAh
Wired Fast Charging	25W wired fast charging	Fast charging
Wireless Charging	15W wireless charging	Not supported
Reverse Charging	Reverse wireless charging	Reverse wireless charging
9. Sound & Audio
Loudspeaker	Stereo speakers	Stereo speakers
3.5mm Headphone Jack	No	No
10. Connectivity & Comms
Wi-Fi Standard	Wi-Fi 6	Wi-Fi 7 / 6E tri-band
Bluetooth	5.0	Bluetooth 5.3+
USB Port & Speed	USB-C 3.2	USB Type-C
NFC	Yes (contactless payment)	Yes
11. Sensors & Security
Sensors	Biometric fingerprint/face, accelerometer, gyro, compass	Biometric fingerprint/face, accelerometer, gyro, compass
Satellite Features	Emergency SOS via satellite (select markets)	Emergency SOS via satellite (select markets)
12. Colors & Overview
Colors	Standard finishes	Standard finishes
Launch Price	$799	Price on request

Editorial Lab Verdict

Oppo A5x 5G edges ahead with a BeastScore of 81.1/100

After comprehensive hardware benchmark comparisons, Oppo A5x 5G ranks as the overall top pick in this matchup. Key differentiators include its superior specifications and verified build advantages.

When to choose Galaxy S21 5G:

Significantly faster wired charging: 25W vs max 0W · Higher resolution main sensor: 64 MP vs max 50 MP

When to choose Oppo A5x 5G:

Higher overall BeastScore: 81.1 vs top rival 80.8 · Larger battery capacity: 6,000 mAh (+2,000 mAh more)

Quick Answers

Frequently Asked Questions: Galaxy S21 5G vs Oppo A5x 5G

Which is better: Galaxy S21 5G or Oppo A5x 5G?

Oppo A5x 5G leads with an overall BeastScore of 81.1/100 compared to Galaxy S21 5G (80.8/100), driven by advantages in Higher overall BeastScore: 81.1 vs top rival 80.8 and Larger battery capacity: 6,000 mAh (+2,000 mAh more).