Samsung Galaxy A55 5G vs Samsung Galaxy S21 5G

Compare Samsung Galaxy A55 5G vs Samsung Galaxy S21 5G side by side: Samsung Exynos 1480 (4nm) vs Exynos 2100 / Snapdragon 888 5G (5 nm), 50MP vs 12MP camera…

Samsung

Galaxy S21 5G

$799

6categories won

8 categories tied · 21 scored in total · add a third phone

Information Gain

Which one wins?

MxMob Algorithmic Verdict

Samsung Galaxy S21 5G takes the overall win

Overall Pick

The Samsung Galaxy S21 5G proves superior overall against the Samsung Galaxy A55 5G, outperforming on gaming and photography. For battery longevity and charging speed, the Galaxy A55 5G takes the lead, while the Galaxy S21 5G is the clear choice for demanding 3D gaming and heavy multitasking. Choose the Galaxy S21 5G if you want the highest performance ceiling, or opt for the Galaxy A55 5G if its lower retail price better fit your budget.

🔋 BatteryGalaxy A55 5G

Galaxy A55 5G wins on endurance with 5,000 mAh and 25W fast charging.

🎮 GamingGalaxy S21 5G

Galaxy S21 5G provides greater sustained gaming output with its Exynos 2100 / Snapdragon 888 5G (5 nm) and 8GB RAM.

📸 CameraGalaxy S21 5G

Galaxy S21 5G takes photography with 12MP optics and 3x optical telephoto capabilities.

🏷️ ValueGalaxy A55 5G

Galaxy A55 5G provides a sharper value proposition, coming in at $449 vs $799.

Category verdicts are computed algorithmically from verified technical specifications and hardware benchmarks. Rows where neither figure is objectively better — screen size preference, operating system choice, aesthetic build materials — are displayed for direct reference without scoring bias.

Galaxy A55 5G vs Galaxy S21 5G: specifications compared

Display

Display comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Screen size	6.6"	6.2"
Resolution	1080 x 2340	1080 x 2400Winner
Pixel density	390 ppi	424 ppiWinner
Refresh rate	120 Hz	120 Hz
Peak brightness	1000 nits	1300 nitsWinner

Performance

Performance comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Chipset	Samsung Exynos 1480 (4nm)	Exynos 2100 / Snapdragon 888 5G (5 nm)
Process node	4 nmWinner	5 nm
AnTuTu score	735,000	820,000Winner
Geekbench multi	3520	3720
Maximum RAM	12 GBWinner	8 GB
Maximum storage	256GBWinner	128GB

Camera

Camera comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Main sensor	50 MPWinner	12 MP
Rear cameras	3	3
Optical zoom	—	3x
Ultrawide	12 MP	12 MP
Selfie camera	32 MPWinner	10 MP
Max video	4K at 30fps / 1080p at 60fps / 720p at 480fps slo-mo	8K at 24fps / 4K at 60fps

Battery and charging

Battery and charging comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Capacity	5,000 mAhWinner	4,000 mAh
Wired charging	25 W	25 W
Wireless charging	No	15 WWinner

Design

Design comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Weight	213 g	169 gWinner
Thickness	8.2 mm	7.9 mm
Water resistance	IP67	IP68
Build	Brushed metal aluminum frame, Corning Gorilla Glass Victus+ front and back, Key Island design	Aluminum frame, glastic back, Gorilla Glass Victus front

Software and support

Software and support comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
Operating system	Android 14 (One UI 6.1)	Android 11
OS updates	4 years	4 years
Security updates	5 years	5 years

Connectivity and value

Connectivity and value comparison between the Samsung Galaxy A55 5G, Samsung Galaxy S21 5G
Specification	Galaxy A55 5G	Galaxy S21 5G
5G	Yes	Yes
Wi-Fi	Wi-Fi 6 (802.11ax, dual-band 2.4/5GHz, HE80)	Wi-Fi 6 (802.11ax)
Storage expansion	microSD	None
3.5mm jack	No	No
Launch price	$449Winner	$799