Samsung Galaxy S21 Ultra 5G vs Xiaomi MIX Fold 5

Compare Samsung Galaxy S21 Ultra 5G vs Xiaomi MIX Fold 5 side by side: Exynos 2100 / Snapdragon 888 5G (5 nm) vs Qualcomm Snapdragon 8 Elite Gen 2, 108MP vs…

Samsung

MIX Fold 5

$1,699

15categories won

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

Information Gain

Which one wins?

MxMob Algorithmic Verdict

Xiaomi MIX Fold 5 takes the overall win

Overall Pick

The Xiaomi MIX Fold 5 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 MIX Fold 5. Choose the MIX Fold 5 if you want the highest performance ceiling, or opt for the Galaxy S21 Ultra 5G if its lower retail price better fit your budget.

🔋 BatteryMIX Fold 5

MIX Fold 5 takes battery honors offering 5,400 mAh alongside 67W charging.

🎮 GamingMIX Fold 5

MIX Fold 5 provides greater sustained gaming output with its Qualcomm Snapdragon 8 Elite Gen 2 and 24GB RAM.

📸 CameraGalaxy S21 Ultra 5G

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

🏷️ ValueGalaxy S21 Ultra 5G

Galaxy S21 Ultra 5G provides a sharper value proposition, coming in at $1199 vs $1699.

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 MIX Fold 5: specifications compared

Display

Display comparison between the Samsung Galaxy S21 Ultra 5G, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
Screen size	6.8"	7.98"
Resolution	1440 x 3200	2224 x 2488Winner
Pixel density	516 ppiWinner	418 ppi
Refresh rate	120 Hz	120 Hz
Peak brightness	1500 nits	3000 nitsWinner

Performance

Performance comparison between the Samsung Galaxy S21 Ultra 5G, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
Chipset	Exynos 2100 / Snapdragon 888 5G (5 nm)	Qualcomm Snapdragon 8 Elite Gen 2
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	1TBWinner

Camera

Camera comparison between the Samsung Galaxy S21 Ultra 5G, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
Main sensor	108 MPWinner	50 MP
Rear cameras	4Winner	3
Optical zoom	10xWinner	5x
Ultrawide	12 MP	50 MPWinner
Selfie camera	40 MPWinner	20 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, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
Capacity	5,000 mAh	5,400 mAhWinner
Wired charging	25 W	67 WWinner
Wireless charging	15 W	50 WWinner

Design

Design comparison between the Samsung Galaxy S21 Ultra 5G, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
Weight	227 g	216 gWinner
Thickness	8.9 mm	4.5 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, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
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, Xiaomi MIX Fold 5
Specification	Galaxy S21 Ultra 5G	MIX Fold 5
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	$1,199Winner	$1,699