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Samsung Galaxy S25 Ultra vs Asus Zenfone 12 Ultra

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Samsung Galaxy S25 Ultra vs Asus Zenfone 12 Ultra

94 out of 100
Samsung Galaxy S25 Ultra
VS
85 out of 100
Asus Zenfone 12 Ultra
Samsung Galaxy S25 Ultra
Asus Zenfone 12 Ultra

Here we compared two flagship smartphones: the 6.9-inch Samsung Galaxy S25 Ultra (with Qualcomm Snapdragon 8 Elite) that was released on January 22, 2025, against the Asus Zenfone 12 Ultra, which is powered by the same chip and came out 1 month after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy S25 Ultra
  • Shows 30% longer battery life (28:34 vs 21:58 hours)
  • 28% higher pixel density (498 vs 388 PPI)
  • The rear camera has a 5x optical zoom
  • Supports Dolby Atmos sound technology
  • The front-facing camera can record video at 4K
Reasons to consider the Asus Zenfone 12 Ultra
  • Higher display refresh rate – 144 Hz
  • Delivers 38% higher peak brightness (1959 against 1415 nits)
  • Comes with 500 mAh larger battery capacity: 5500 vs 5000 mAh
  • Slow-motion recording at 480FPS
  • Has 2 SIM card slots
  • Supports higher wattage charging (65W versus 45W)
  • Includes a 3.5 mm headphone audio jack port

Review

Evaluation of Samsung Galaxy S25 Ultra and Asus Zenfone 12 Ultra crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
NanoReview Score
Final comparison evaluation
Choose the importance of each parameter to more accurately identify the smartphone that best meets your particular needs.

Tests and specifications

Comparison table of technical specifications and tests
Phone:
Galaxy S25 Ultra
vs
Zenfone 12 Ultra

Display

Type Dynamic AMOLED AMOLED
Size 6.9 inches 6.78 inches
Resolution 1440 x 3120 pixels 1080 x 2400 pixels
Aspect ratio 19.5:9 20:9
PPI 498 ppi 388 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes
Max rated brightness 2600 nits 2500 nits
HDR support Yes, HDR10+ Yes, HDR10+
Touch sampling rate 240 Hz -
Screen protection Corning Gorilla Armor 2 1-120
Screen-to-body ratio 92.4% 88%
Display features - DCI-P3
- Always-On Display
- DC Dimming		 - DCI-P3
- Always-On Display
- DC Dimming
Peak brightness test (auto)
Galaxy S25 Ultra
1415 nits
Zenfone 12 Ultra +38%
1959 nits

Design and build

Height 162.8 mm (6.41 inches) 163.8 mm (6.45 inches)
Width 77.6 mm (3.06 inches) 77 mm (3.03 inches)
Thickness 8.2 mm (0.32 inches) 8.9 mm (0.35 inches)
Weight 218 g (7.69 oz) 220 g (7.76 oz)
Waterproof IP68 IP68
Advanced cooling Vapor chamber Vapor chamber
Rear material Glass Glass
Frame material Metal Metal
Colors Black, Silver, Gray, Blue White, Black, Green, Yellow
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio

Performance

Tests of Samsung Galaxy S25 Ultra and Asus Zenfone 12 Ultra in the benchmarks
SoC
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 8 Elite
Max clock 4470 MHz 4320 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 3.53 GHz: Oryon (Phoenix M)
- 2 cores at 4.32 GHz: Oryon (Phoenix L)		 - 6 cores at 3.53 GHz: Oryon (Phoenix M)
- 2 cores at 4.32 GHz: Oryon (Phoenix L)
Manufacturing TSMC TSMC
Lithography process 3 nanometers 3 nanometers
Neural processor (NPU) Hexagon Hexagon
Graphics Adreno 830 Adreno 830
GPU shading units 1536 1536
GPU clock 1100 MHz 1100 MHz
FLOPS ~3379.2 GFLOPS ~3379.2 GFLOPS

Benchmarks

Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
AnTuTu Benchmark 10
Galaxy S25 Ultra
2816803
Zenfone 12 Ultra +1%
2853794
CPU 649364 610195
GPU 1296471 1227773
Memory 494865 546153
UX 376103 469673
Total score 2816803 2853794
Samples Less than 3 Less than 3

Memory

RAM
RAM size 12, 16 GB 12, 16 GB
Memory type LPDDR5X LPDDR5X
Memory clock 5333 MHz 5333 MHz
Channels 2 2
Storage
Storage size 256, 512, 1024 GB 256, 512 GB
Storage type UFS 4.0 UFS 4.0
Memory card No No

Software

Operating system Android 15 Android 15
ROM One UI 7.0 -
OS size 30.4 GB -

Battery

Capacity 5000 mAh 5500 mAh
Max charge power 45 W 65 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging Yes (25 W) Yes (15 W)
Reverse charging Yes, (wireless) Yes
Fast charging Yes (72% in 30 min) Yes (77% in 30 min)
Full charging time 0:59 hr 0:45 hr
Battery life tests
Web browsing 08:35 hr 09:46 hr
Watching video 16:40 hr 12:28 hr
Gaming 06:40 hr 07:02 hr
Standby 165 hr 98 hr
General battery life
Galaxy S25 Ultra +30%
28:34 hr
Zenfone 12 Ultra
21:58 hr

Main camera

Matrix 200 megapixels 50 megapixels
Image resolution 16320 x 12240 8192 x 6144
Zoom Optical, 5x Optical, 3x
Flash LED LED
Stabilization Optical Optical
8K video recording Up to 30FPS Up to 30FPS
4K video recording Up to 120FPS Up to 60FPS
1080p video recording Up to 240FPS Up to 60FPS
Slow motion 240 FPS (1080p) 480 FPS (720p)
Angle of widest lens 120° 120°
Lenses 1) Standard: 200 MP
2) Telephoto: 50 MP
3) Telephoto: 12 MP
4) Ultrawide: 50 MP
1) Standard: 50 MP
2) Telephoto: 32 MP
3) Ultrawide: 13 MP
Camera features - Bokeh mode
- Pro mode
- RAW support		 - Bokeh mode
- Pro mode
- RAW support
Standard lens
Image resolution 200 MP 50 MP
Aperture f/1.7 f/1.9
Focal length 23 mm 24 mm
Sensor Samsung ISOCELL HP2 Sony LYT-700
Sensor size 1/1.3" 1/1.56"
Pixel size 0.6 micron 1 micron
Autofocus Laser autofocus Phase autofocus
Stabilization Optical Optical
Telephoto lens
Image resolution 50 MP 32 MP
Aperture f/3.4 f/2.4
Focal length 111 mm 65 mm
Sensor Sony IMX854 -
Sensor size 1/2.52" 1/3.2"
Pixel size 0.7 micron 0.7 micron
Stabilization Optical Optical
Ultra-wide lens
Image resolution 50 MP 13 MP
Aperture f/1.9 f/2.2
Focal length 13 mm 13 mm
Sensor Samsung ISOCELL S5KJN3 -
Sensor size 1/2.5" 1/3.0"
Pixel size 0.7 micron 1.12 micron
Stabilization Digital Digital

Selfie camera

Megapixels 12 megapixels 32 megapixels
Image resolution 4000 x 3000 3264 x 2448
Aperture f/2.2 f/2.5
Focal length 26 mm 22 mm
Sensor Samsung S5K3LU CMOS
Sensor size 1/3.2" 1/3.2"
Pixel size 1.12 micron 0.7 micron
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 FPS 1080p (Full HD) at 30 FPS
Depth sensor (TOF 3D) No No

Connectivity

Wi-Fi standard Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.4 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 3.2
USB features - Charging
- USB-Storage mode
- OTG		 - Charging
- USB-Storage mode
- OTG
DisplayPort Yes, DP 1.2 -
GPS GPS, GLONASS, Beidou, Galileo, QZSS GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC
NFC* Yes Yes
Infrared port No No
Network
Number of SIM* 1 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* Yes Yes
Hybrid slot No No
LTE Cat* - 20
5G support Yes Yes

Sound

Speakers Stereo Stereo
Headphone audio jack No Yes
FM radio No No
Dolby Atmos Yes No

Other

Category Flagship Flagship
Announced January 2025 February 2025
Release date February 2025 February 2025
Launch price $1299 $999
SAR (head) 1.25 W/kg -
SAR (body) 1.42 W/kg -
Sensors - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - Hall-effect sensor
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled charger Not included Not included
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
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