Samsung Galaxy M55s 5G vs Samsung Galaxy S21 5G

Compare Samsung Galaxy M55s 5G vs Samsung Galaxy S21 5G side by side: Qualcomm Snapdragon 7 Gen 1 vs Exynos 2100 / Snapdragon 888 5G (5 nm), 50MP vs 12MP…

Samsung

Galaxy S21 5G

$799

7categories won

7 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 M55s 5G, outperforming on gaming and photography. For battery longevity and charging speed, the Galaxy M55s 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 M55s 5G if its lower retail price better fit your budget.

🔋 BatteryGalaxy M55s 5G

Galaxy M55s 5G wins on endurance with 5,000 mAh and 45W 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 M55s 5G

Galaxy M55s 5G provides a sharper value proposition, coming in at $249 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 M55s 5G vs Galaxy S21 5G: specifications compared

Display

Display comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Screen size	6.7"	6.2"
Resolution	1080 x 2400	1080 x 2400
Pixel density	393 ppi	424 ppiWinner
Refresh rate	120 Hz	120 Hz
Peak brightness	1000 nits	1300 nitsWinner

Performance

Performance comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Chipset	Qualcomm Snapdragon 7 Gen 1	Exynos 2100 / Snapdragon 888 5G (5 nm)
Process node	4 nmWinner	5 nm
AnTuTu score	590,000	820,000Winner
Geekbench multi	2850	3720Winner
Maximum RAM	8 GB	8 GB
Maximum storage	256GBWinner	128GB

Camera

Camera comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Main sensor	50 MPWinner	12 MP
Rear cameras	3	3
Optical zoom	—	3x
Ultrawide	8 MP	12 MPWinner
Selfie camera	50 MPWinner	10 MP
Max video	4K@30fps, 1080p@60fps	8K at 24fps / 4K at 60fps

Battery and charging

Battery and charging comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Capacity	5,000 mAhWinner	4,000 mAh
Wired charging	45 WWinner	25 W
Wireless charging	No	15 WWinner

Design

Design comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Weight	180 g	169 gWinner
Thickness	7.8 mm	7.9 mm
Water resistance	IP67	IP68
Build	Sleek polycarbonate frame with fusion patterned back, glass front	Aluminum frame, glastic back, Gorilla Glass Victus front

Software and support

Software and support comparison between the Samsung Galaxy M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
Operating system	Android 14	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 M55s 5G, Samsung Galaxy S21 5G
Specification	Galaxy M55s 5G	Galaxy S21 5G
5G	Yes	Yes
Wi-Fi	Wi-Fi 6 (802.11ax)	Wi-Fi 6 (802.11ax)
Storage expansion	microSD	None
3.5mm jack	No	No
Launch price	$249Winner	$799