Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy Z Flip 6

Compare Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy Z Flip 6 side by side: Exynos 2100 / Snapdragon 888 5G (5 nm) vs Qualcomm Snapdragon 8 Gen 3 for Galaxy…

Samsung

Galaxy Z Flip 6

$1,099

10categories won

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

Information Gain

Which one wins?

MxMob Algorithmic Verdict

Samsung Galaxy S21 Ultra 5G takes the overall win

Overall Pick

The Samsung Galaxy S21 Ultra 5G claims the overall win over the Samsung Galaxy Z Flip 6, delivering a stronger technical package across battery endurance and core hardware. For battery longevity and charging speed, the Galaxy S21 Ultra 5G takes the lead, while the Galaxy Z Flip 6 is the clear choice for demanding 3D gaming and heavy multitasking. Choose the Galaxy S21 Ultra 5G if you want the highest performance ceiling, or opt for the Galaxy Z Flip 6 if its lower retail price better fit your budget.

🔋 BatteryGalaxy S21 Ultra 5G

Galaxy S21 Ultra 5G wins on endurance with 5,000 mAh and 25W fast charging.

🎮 GamingGalaxy Z Flip 6

Galaxy Z Flip 6 provides greater sustained gaming output with its Qualcomm Snapdragon 8 Gen 3 for Galaxy and 12GB RAM.

📸 CameraGalaxy S21 Ultra 5G

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

🏷️ ValueGalaxy Z Flip 6

Galaxy Z Flip 6 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 Galaxy Z Flip 6: specifications compared

Display

Display comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Screen size	6.8"	6.7"
Resolution	1440 x 3200Winner	1080 x 2640
Pixel density	516 ppiWinner	426 ppi
Refresh rate	120 Hz	120 Hz
Peak brightness	1500 nits	2600 nitsWinner

Performance

Performance comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Chipset	Exynos 2100 / Snapdragon 888 5G (5 nm)	Qualcomm Snapdragon 8 Gen 3 for Galaxy
Process node	5 nm	4 nmWinner
AnTuTu score	870,000	1,720,000Winner
Geekbench multi	3800	6850Winner
Maximum RAM	12 GB	12 GB
Maximum storage	128GB	512GBWinner

Camera

Camera comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Main sensor	108 MPWinner	50 MP
Rear cameras	4Winner	2
Optical zoom	10x	—
Ultrawide	12 MP	12 MP
Selfie camera	40 MPWinner	10 MP
Max video	8K at 24fps / 4K at 60fps all cameras	4K at 60fps

Battery and charging

Battery and charging comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Capacity	5,000 mAhWinner	4,000 mAh
Wired charging	25 W	25 W
Wireless charging	15 W	15 W

Design

Design comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Weight	227 g	187 gWinner
Thickness	8.9 mm	6.9 mmWinner
Water resistance	IP68	IP48
Build	Aluminum frame, Gorilla Glass Victus front and back	Enhanced Armor Aluminum frame, Gorilla Glass Victus 2 back & cover

Software and support

Software and support comparison between the Samsung Galaxy S21 Ultra 5G, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
Operating system	Android 11	Android 14
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, Samsung Galaxy Z Flip 6
Specification	Galaxy S21 Ultra 5G	Galaxy Z Flip 6
5G	Yes	Yes
Wi-Fi	Wi-Fi 6E (802.11ax)	Wi-Fi 6E (802.11ax)
Storage expansion	None	None
3.5mm jack	No	No
Launch price	$1,199	$1,099Winner