ASUS Zenfone 12 Ultra vs Samsung Galaxy S25 Edge

ASUS Zenfone 12 Ultra

ASUS

Good

Samsung Galaxy S25 Edge

Samsung

7.5

Good

What Reviewers Agree On

Snapdragon 8 Elite delivers excellent, blazing-fast performance
Battery life is genuinely strong — comfortably lasts a full day and beyond
6-axis gimbal stabilizer produces uniquely impressive video stabilization
Clean near-stock Android with minimal bloatware is the best software package on Android
Only 2 Android updates is universally criticized as unacceptable at EUR 1,099
Camera processing falls short of Samsung, Google, and Apple at this price tier

Deal Breakers

Only 2 Android OS updates — worst among 2025 flagships at this price

Detailed Comparison

Design & Build

ASUS Zenfone 12 Ultra

Sleek matte glass back with ultra-narrow bezels and IP68 water resistance. The rare 3.5mm headphone jack is a welcome differentiator. However, the design is nearly identical to the Zenfone 11 Ultra, and the large 6.78-inch form factor disappointed fans of ASUS's formerly compact Zenfone line.

Retains the rare 3.5mm headphone jack — almost unique among 2025 flagships
IP68 water resistance with Gorilla Glass Victus 2 and sleek matte glass back
Nearly identical design to the Zenfone 11 Ultra — barely iterative year-over-year
No charger included in the box despite the premium EUR 1,099 price

Samsung Galaxy S25 Edge

The S25 Edge's raison d'être is its design. At 5.8mm thin and 163g, it's remarkably light and slim in a way that genuinely surprises when you first pick it up. The titanium frame and Gorilla Glass Victus 2 maintain Samsung's premium build standards.

At 5.8mm, it's breathtakingly thin — a genuine head-turner that feels like holding a concept device

TechTalkTown may earn a commission from purchases made through links below. As an Amazon Associate I earn from qualifying purchases. This does not influence our reviews. Learn more.

Buy ASUS Zenfone 12 Ultra

Buy Samsung Galaxy S25 Edge

AmazonCheck price

People Also Compare

ASUS Zenfone 12 Ultra vs Samsung Galaxy S26 Ultra Samsung Galaxy S25 Edge vs Samsung Galaxy S26 Ultra ASUS Zenfone 12 Ultra vs Samsung Galaxy S26+Samsung Galaxy S25 Edge vs Samsung Galaxy S26+ASUS Zenfone 12 Ultra vs Samsung Galaxy S26 Samsung Galaxy S25 Edge vs Samsung Galaxy S26 ASUS Zenfone 12 Ultra vs Samsung Galaxy Z TriFold Samsung Galaxy S25 Edge vs Samsung Galaxy Z TriFold ASUS Zenfone 12 Ultra vs OnePlus 15 OnePlus 15 vs Samsung Galaxy S25 Edge

Browse all products

What Reviewers Agree On

The 5.8mm design is genuinely stunning and a remarkable engineering achievement
Main camera (200MP) performs well despite the thin chassis constraints
Snapdragon 8 Elite delivers excellent day-to-day performance
The display is beautiful — 6.7-inch Dynamic AMOLED 2X at its finest
Build quality and premium materials justify the flagship positioning

Deal Breakers

No telephoto camera — only ultrawide and main sensors at a flagship price
3,900mAh battery is significantly smaller than competitors and may not last a full day for power users
Thermal throttling under sustained gaming or camera use due to thin chassis

Display

ASUS Zenfone 12 Ultra

The 6.78-inch Samsung E6 AMOLED panel delivers 2,500 nits peak brightness with LTPO adaptive 1-120Hz (144Hz for gaming). Vivid colors and excellent outdoor readability are let down by FHD+ resolution at a price where competitors offer QHD+, and poor minimum brightness.

2,500 nits peak brightness with LTPO 1-120Hz and 144Hz gaming mode — vivid and responsive
Same display panel as the Zenfone 11 Ultra — no improvement whatsoever year-over-year
Only FHD+ resolution at EUR 1,099 — competitors offer QHD+ at this price tier

Samsung Galaxy S25 Edge

The 6.7-inch Dynamic AMOLED 2X display maintains Samsung's display excellence. It's the same panel technology found in the S25+, delivering vibrant colors, deep blacks, and smooth 120Hz scrolling.

Display quality is flagship-excellent — Samsung hasn't compromised on screen quality for the thin design
2,600 nits peak brightness ensures excellent outdoor visibility
The thin bezels and edge-to-edge design make the display feel even more immersive

Battery Life

ASUS Zenfone 12 Ultra

The 5,500mAh dual-cell battery delivers excellent all-day endurance that approaches two days for lighter users. 65W wired charging goes from 0-77% in 30 minutes, and Qi 1.3 wireless charging is included. Battery specs are unchanged from the Zenfone 11 Ultra.

5,500mAh battery delivers excellent all-day endurance — close to two days for light users
65W wired charging reaches 77% in 30 minutes with Qi 1.3 wireless charging support
Same battery specs as Zenfone 11 Ultra — 65W charging falls behind competitors offering 100W+

Samsung Galaxy S25 Edge

Battery life is the Edge's Achilles' heel. The 3,900mAh cell is notably smaller than competitors, and while the efficient Snapdragon 8 Elite helps, power users will struggle to get through a full day.

3,900mAh battery is a real concern — heavy users will need to charge by mid-afternoon
Light to moderate users can get through a day, but there's no room for complacency
The thin design forced Samsung to sacrifice the one thing consumers actually want more of: battery
45W charging helps recover quickly, but you'll be using it more often than with other flagships