Home Phone comparison Samsung Galaxy Z Fold 6 and Samsung Galaxy S25 Ultra - Which is better?

Samsung Galaxy Z Fold 6 vs Samsung Galaxy S25 Ultra

80 out 100
Samsung Galaxy Z Fold 6
VS
94 out 100
Samsung Galaxy S25 Ultra
Samsung Galaxy Z Fold 6
Samsung Galaxy S25 Ultra

Compared 2 smartphones : Samsung Galaxy Z Fold 6 Manufactured in July, 2024, with display 7.6 with chipsetQualcomm Snapdragon 8 Gen 3, vs Samsung Galaxy S25 Ultra, Manufactured in February, 2025with chipsetQualcomm Snapdragon 8 Elite. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy Z Fold 6
  • Larger display: 7.6in
Reasons to choose Samsung Galaxy S25 Ultra
  • Higher pixel density: 498ppi
  • Lighter design: 218g vs 239g
  • Higher battery capacity: 5000mAh vs 4400mAh
  • Newer Bluetooth version: 5.4 vs 5.3

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 12/512 GB
- 12/1024 GB		 - 12/256 GB
- 12/512 GB
- 12/1024 GB
- 16/1024 GB

Review

Key Specs Samsung Galaxy Z Fold 6 and Samsung Galaxy S25 Ultra
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy Z Fold 6
vs
Galaxy S25 Ultra

Display

Display quality comparison
Type Dynamic AMOLED Dynamic AMOLED
Size 7.6 in 6.9 in
Resolution 1856x2160 pixels 1440x3120 pixels
Aspect ratio 20.9:18 19.5:9
Pixel density 374 ppi 498 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max brightness n/a 2600 nits
HDR support Yes HDR10+ Yes HDR10+
Touch Sampling Rate n/a 240 Hz
Screen-to-body ratio 90.6 % 92.4 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy Z Fold 6
1556 nits
Samsung Galaxy S25 Ultra
1403 nits
sRGB gamutn/a97.7 %
PWM (Flicker)n/a240 Hz
Response timen/a1 ms
Contrastn/a∞ Infinite
Sources: NotebookCheck [Samsung Galaxy S25 Ultra]

Design & Build

Design and ergonomics comparison
Height 153.5 mm (6.04 in) 162.8 mm (6.41 in)
Width 132.6 mm (5.22 in) 77.6 mm (3.06 in)
Thickness 5.6 mm (0.22 in) 8.2 mm (0.32 in)
Weight 239 g (8.43 oz) 218 g (7.69 oz)
Water resistance IP48 IP68
Cooling system Vapor chamber Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - White
- Black
- Silver
- Green
- Pink		 - Black
- Silver
- Gray
- Blue
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Samsung Galaxy Z Fold 6
90.6 %
Samsung Galaxy S25 Ultra
92.4 %

Performance

Testing Samsung Galaxy Z Fold 6 and Samsung Galaxy S25 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Gen 3 Qualcomm Snapdragon 8 Elite
Max Frequency 3390 MHz 4470 MHz
CPU Cores 8 (1 + 3 + 2 + 2) 8 (2 + 6)
Architecture - 2/2.27 (Cortex-A520)
- 2/2.96 (Cortex-A720)
- 3/3.15 (Cortex-A720)
- 1/3.3 (Cortex-X4)		 - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))
Process TSMC TSMC
Transistor Size 4 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 750 Adreno 830
GPU Cores 1536 1536
GPU Frequency 1000 MHz 1100 MHz
FLOPS 2774 GFLOPS 3379.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy Z Fold 6
2244
Samsung Galaxy S25 Ultra
3147
Geekbench 6 (Multi-Core)
Samsung Galaxy Z Fold 6
6876
Samsung Galaxy S25 Ultra
9750
Geekbench 6 (Single-Core)22443147
Geekbench 6 (Multi-Core)68769750
Geekbench Compute (GPU)n/a25681
Sources: Geekbench v6 [Samsung Galaxy Z Fold 6], [Samsung Galaxy S25 Ultra]
AnTuTu 10
AnTuTu 10
Samsung Galaxy Z Fold 6
1932987
Samsung Galaxy S25 Ultra
2795139
CPU457523659871
GPU8004401294167
Memory366650471319
UX308374369782
NanoReview Score19329872795139
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy Z Fold 6
14677
Samsung Galaxy S25 Ultra
n/a
Sources: 3DMark [Samsung Galaxy Z Fold 6]
PCMark 3.0
PCMark 3.0
Samsung Galaxy Z Fold 6
17948
Samsung Galaxy S25 Ultra
n/a
Writing score21402n/a
Web score18660n/a
Video editing7996n/a
Data manipulation16566n/a
NanoReview Score17948n/a

Memory

RAM
RAM Size 12 GB - 12 GB
- 16 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 4200 MHz 5333 MHz
Channels 4 2
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		- 256 GB
- 512 GB
- 1024 GB
Storage TypeUFS 4.0UFS 4.0
Memory CardNoNo

Software

OS Android 14 Android 15
OS Size 26.8 GB 30.4 GB
UI Skin One UI 6.1.1 One UI 7.0

Battery

Volume 4400 mAh 5000 mAh
Max Charging Power 25 W 45 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging Yes (15 W) Yes (25 W)
Reverse Charging Yes (Wireless) Yes (Wireless)
Fast Charging Yes (38% in 30 min) Yes (72% in 30 min)
Full Charge Time 1:41 h 0:59 h
Battery Life Test
Battery Life
Samsung Galaxy Z Fold 6
19:49
Samsung Galaxy S25 Ultra
31:10
Web Browsing06:44 h11:10 h
Video Playback13:06 h19:32 h
Games04:56 h06:22 h
Standby Mode100 h160 h

Main camera

Matrix 50 MP 200 MP
Photo resolution 8160x6120 pixels 16320x12240 pixels
Zoom Optical, 3x Optical, 5x
Flash LED LED
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
4K Recording Yes (Up to 60 fps) Yes (Up to 120 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 240 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
Wide-angle lens 123 ° 120 °
Lenses count Standard: 50 MP
Telephoto: 10 MP
Ultra-wide: 12 MP		 Standard: 200 MP
Telephoto: 50 MP
Telephoto: 12 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP200 MP
Aperturef/1.8f/1.7
Focal length23 mm23 mm
SensorSamsung ISOCELL GN3Samsung ISOCELL S5KHP2
Sensor size1/1.571/1.3
Pixel size1 μm0.6 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalOptical
Telephoto
Matrix10 MP50 MP
Aperturef/2.4f/3.4
Focal length66 mm111 mm
SensorSamsung ISOCELL 3K1Sony IMX854
Sensor size1/3.941/2.52
Pixel size1 μm0.7 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix12 MP50 MP
Aperturef/2.2f/1.9
Focal length13 mm13 mm
SensorSamsung ISOCELL 3LUSamsung ISOCELL S5KJN3
Sensor size1/3.21/2.5
Pixel size1.12 μm0.7 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy Z Fold 6
132
Samsung Galaxy S25 Ultra
144
Video quality
Samsung Galaxy Z Fold 6
128
Samsung Galaxy S25 Ultra
143
Overall camera score
Samsung Galaxy Z Fold 6
133
Samsung Galaxy S25 Ultra
146
Bokeh7570
Preview7181
Zoom135149
Sources: DxOMark [Samsung Galaxy Z Fold 6], [Samsung Galaxy S25 Ultra]

Front camera

Matrix 10 MP 12 MP
Photo resolution 3648x2736 pixels 4000x3000 pixels
Aperture f/2.2 f/2.2
Focal length 24 mm 26 mm
Sensor Sony IMX374 Samsung S5K3LU
Sensor size 1/3 1/3.2
Pixel size 1.22 μm 1.12 μm
Autofocus No Phase autofocus (Dual Pixel)
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6E (802.11 a/b/g/n/ac/ax) 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 5.3 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 Yes DP 1.2
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*21
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesYes
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800, PCS1900GSM850, GSM900, DCS1800, PCS1900
3G BandsUMTS B1(2100), B2(1900), B4(AWS), B5(850), B8(900)UMTS B1(2100),B2(1900),B4(AWS),B5(850),B8(900)
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B38/B39/B40/B41/B66)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B29/B30/B66/B71)
5G SupportYesYes

Sound

Speakers Stereo Stereo
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy Z Fold 6
n/a
Samsung Galaxy S25 Ultra
93 dB

Other

Class Flagship Flagship
Announced July, 2024 yr January, 2025 yr
Release Date July, 2024 yr February, 2025 yr
Launch Price ($) 1899 1299
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No No

Note

Samsung Galaxy S25 Ultra:

Supports up to 2 eSIMs. The international model has 2 physical SIM slots, while the U.S. version has 1.","Uses Grade 5 titanium and Corning Gorilla Armor 2 glass on both sides.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S25 Ultra the clear winner in this comparison.

Survey

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