Samsung Galaxy S21 Ultra 5G vs vivo X300 Pro

Compare Samsung Galaxy S21 Ultra 5G vs vivo X300 Pro side by side: Exynos 2100 / Snapdragon 888 5G (5 nm) vs MediaTek Dimensity 9500, 108MP vs 50MP camera…

Samsung

X300 Pro

$1,099

15categories won

1 categories tied · 22 scored in total · add a third phone

Information Gain

Which one wins?

MxMob Algorithmic Verdict

vivo X300 Pro takes the overall win

Overall Pick

The vivo X300 Pro proves superior overall against the Samsung Galaxy S21 Ultra 5G, outperforming on battery endurance and daily usability. In camera testing, the Galaxy S21 Ultra 5G leads with sharper imaging, while battery endurance leans towards the X300 Pro. Choose the X300 Pro if you want the highest performance ceiling, or opt for the Galaxy S21 Ultra 5G if its specific hardware strengths better fit your budget.

🔋 BatteryX300 Pro

X300 Pro takes battery honors offering 6,300 mAh alongside 100W charging.

🎮 GamingX300 Pro

X300 Pro provides greater sustained gaming output with its MediaTek Dimensity 9500 and 24GB RAM.

📸 CameraGalaxy S21 Ultra 5G

Galaxy S21 Ultra 5G wins photography with 108MP main imaging and 10x dedicated optical zoom.

🏷️ ValueX300 Pro

X300 Pro wins on budget and value at $1099 compared to $1199.

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 S21 Ultra 5G vs X300 Pro: specifications compared

Display

Display comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Screen size	6.8"	6.78"
Resolution	1440 x 3200Winner	1260 x 2800
Pixel density	516 ppiWinner	453 ppi
Refresh rate	120 Hz	120 Hz
Peak brightness	1500 nits	4500 nitsWinner

Performance

Performance comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Chipset	Exynos 2100 / Snapdragon 888 5G (5 nm)	MediaTek Dimensity 9500
Process node	5 nm	2 nmWinner
AnTuTu score	870,000	3,200,000Winner
Geekbench multi	3800	10800Winner
Maximum RAM	12 GB	24 GBWinner
Maximum storage	128GB	2TBWinner

Camera

Camera comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Main sensor	108 MPWinner	50 MP
Rear cameras	4Winner	3
Optical zoom	10xWinner	3.7x
Ultrawide	12 MP	50 MPWinner
Selfie camera	40 MPWinner	32 MP
Max video	8K at 24fps / 4K at 60fps all cameras	8K at 30fps / 4K at 120fps

Battery and charging

Battery and charging comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Capacity	5,000 mAh	6,300 mAhWinner
Wired charging	25 W	100 WWinner
Wireless charging	15 W	50 WWinner

Design

Design comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Weight	227 g	222 gWinner
Thickness	8.9 mm	8.3 mmWinner
Water resistance	IP68	IP68
Build	Aluminum frame, Gorilla Glass Victus front and back	Grade 5 Titanium frame, Ceramic Glass front and back

Software and support

Software and support comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
Operating system	Android 11	Android 17
OS updates	4 years	7 yearsWinner
Security updates	5 years	7 yearsWinner

Connectivity and value

Connectivity and value comparison between the Samsung Galaxy S21 Ultra 5G, vivo X300 Pro
Specification	Galaxy S21 Ultra 5G	X300 Pro
5G	Yes	Yes
Wi-Fi	Wi-Fi 6E (802.11ax)	Wi-Fi 7 (802.11be, tri-band 2.4/5/6GHz, 320MHz bandwidth)
Storage expansion	None	None
3.5mm jack	No	No
Launch price	$1,199	$1,099Winner