Samsung Galaxy S25 Ultra vs OnePlus 15

88 out of 100
Samsung Galaxy S25 Ultra
VS
93 out of 100
OnePlus 15

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 OnePlus 15, which is powered by Qualcomm Snapdragon 8 Elite Gen 5 and came out 9 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

Select the amount of RAM to evaluate performance and value for money more precisely
Memory

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy S25 Ultra
  • The rear camera has a 5x optical zoom
  • 11% higher pixel density (498 vs 450 PPI)
  • Supports Dolby Atmos sound technology
Reasons to consider the OnePlus 15
  • Delivers 138% higher peak brightness (3398 against 1428 nits)
  • Comes with 2300 mAh larger battery capacity: 7300 vs 5000 mAh
  • Shows 37% longer battery life (39:14 vs 28:43 hours)
  • Higher display refresh rate – 165 Hz
  • Newer Bluetooth version (v6.0)
  • Supports higher wattage charging (120W versus 45W)
  • Waterproof body (IP69 classification)
  • 28% better performance in AnTuTu Benchmark (4008K versus 3128K)
  • Slow-motion recording at 480FPS
  • Has 2 SIM card slots
  • Has a built-in infrared port

Review

Evaluation of Samsung Galaxy S25 Ultra and OnePlus 15 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
Select your primary usage scenario to get a more accurate NanoReview Score
📱 Primary usage:

Value for money (Beta)

To get an accurate value-for-money index, update the default prices with actual prices from your country’s retailers (for the selected memory configs) and press the "Calculate" button.
Currency
12 / 256 GB
VS
12 / 256 GB
39.2
(Mediocre)
Value Index
66.9
(Good)

Tests and specifications

Comparison table of technical specifications and tests

Display

Type Dynamic AMOLED AMOLED
Size 6.9 inches 6.78 inches
Resolution 1440 x 3120 pixels 1272 x 2772 pixels
Aspect ratio 19.5:9 19.5:9
PPI 498 ppi 450 ppi
Refresh rate 120 Hz 165 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max rated brightness - 1800 nits
Max rated brightness in HDR 2600 nits 6000 nits
HDR support Yes, HDR10+ Yes, Dolby Vision
Touch sampling rate 240 Hz 330 Hz
Screen protection Corning Gorilla Armor 2 Gorilla Glass Victus 2
Screen-to-body ratio 92.4% 91.2%
Display features - DCI-P3
- Always-On Display
- DC Dimming
- DCI-P3
- Always-On Display
- DC Dimming
Display tests
RGB color space 97.7% 99.9%
PWM 240 Hz 120 Hz
Response time 1 ms 3 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
1428 nits
OnePlus 15 +138%
3398 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 162.8 mm (6.41 inches) 161.42 mm (6.36 inches)
Width 77.6 mm (3.06 inches) 76.67 mm (3.02 inches)
Thickness 8.2 mm (0.32 inches) 8.1 mm (0.32 inches)
Weight 218 g (7.69 oz) 211 g (7.44 oz)
Waterproof IP68 IP69
Advanced cooling Vapor chamber Vapor chamber
Rear material Glass Glass
Frame material Metal Metal
Colors Black, Silver, Gray, Blue Black, Gold, Purple
Fingerprint scanner Yes, in-display Yes, in-display
Repairability Good (3.23/5) Good (3.69/5)
Drop resistance Excellent (A) · 270 drops Good (C) · 90 drops
Screen-to-body ratio
92.4%
91.2%

Performance

Chipset specifications of Samsung Galaxy S25 Ultra and OnePlus 15
SoC
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 8 Elite Gen 5
Max clock 4470 MHz 4600 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 3.63 GHz: Oryon Gen 3 Performance
- 2 cores at 4.74 GHz: Oryon Gen 3 Prime
L3 cache 8 MB 12 MB
Manufacturing TSMC TSMC
Lithography process 3 nanometers 3 nanometers
Neural processor (NPU) Hexagon Hexagon
GPU
Graphics Adreno 830 Adreno 840
GPU shading units 1536 1536
GPU clock 1100 MHz 1300 MHz
FLOPS ~3379.2 GFLOPS ~3993.6 GFLOPS

Benchmarks

Benchmark comparison of Samsung Galaxy S25 Ultra and OnePlus 15
Geekbench 6 (Single-Core)
OnePlus 15 +13%
3607
Geekbench 6 (Multi-Core)
10732
Compute Score (GPU)
26581
24461
Compute Score (GPU) 26581 24461
Single-core score 3202 3607
Multi-core score 10347 10732
Sources: Geekbench [3], [4]
AnTuTu Benchmark 11
OnePlus 15 +28%
4008294
CPU 987646 1184036
GPU 1190760 1490867
Memory 362214 402813
UX 587932 930578
Total score 3128552 4008294
Samples [66 tests] [45 tests]
3DMark Steel Nomad Light
OnePlus 15 +19%
2699
Stability 61% 78%
Graphics test 17 FPS 20 FPS
Graphics score 2272 2699
3DMark Solar Bay
OnePlus 15 +20%
12540
Graphics test 40 FPS 48 FPS
Section 1 50 FPS 56 FPS
Section 2 40 FPS 47 FPS
Section 3 29 FPS 39 FPS
Graphics score 10441 12540
3DMark Wild Life Extreme
Stability 56% -
Graphics test 34 FPS -
Graphics score 5827 -
Sources: 3DMark [5], [6]
PCMark 3.0
19901
15658
Web score 21582 15531
Video editing 8625 6678
Photo editing 34425 26644
Data manipulation 17556 14971
Writing score 26844 20874
AnTuTu 11 Ranking List (73rd and 16th place)

Recent User Tests

The latest benchmark tests that have been submitted by users
Samsung Galaxy S25 Ultra
DateBenchmarkResult
📘 2026-09-06 (Trexsotiy)Battery lifeSOT 12:30 / 03:16
📘 2026-09-02 -> Mohamed_136Battery lifeSOT 8:02 / 17:11
📘 2026-08-29 (PaWK)AnTuTu3034536
📘 2026-08-23 (Apple Slayer)AnTuTu3254557
📘 2026-08-08 (Minh Tùng)AnTuTu2954951
OnePlus 15
DateBenchmarkResult
📘 2026-09-05 (Mehdi)AnTuTu3651261
📘 2026-08-24 -> Ang3L4DAnTuTu4057387
📘 2026-08-15 (YurOk)AnTuTu3870500
📘 2026-08-07 (@zokhidjonovch)AnTuTu4470263
📘 2026-07-31 (@zokhidjonovch)AnTuTu4177816

Memory

RAM
RAM size 12 GB 12 GB
Memory type LPDDR5X LPDDR5X
Memory clock 5300 MHz 5333 MHz
Channels 4 4
Storage
Storage size 256 GB 256 GB
Storage type UFS 4.0 UFS 4.1
Memory card No No

Software

Operating system Android 15 (Can be upgraded to Android 16) Android 16
ROM One UI 8.0 OxygenOS 16
OS size 30.4 GB 26 GB
OS updates 7 years 4 years
Security updates 7 years 6 years

Battery

Capacity 5000 mAh 7300 mAh
Max charge power 45 W 120 W
Battery type Li-Ion Silicon-Carbon (Si/C)
Replaceable No No
Wireless charging Yes (25 W) Yes (50 W)
Reverse charging Yes, (wireless) Yes, (wireless)
Bypass charging Yes Yes
Fast charging Yes (72% in 30 min) Yes (50% in 15 min)
Full charging time 0:59 hr 0:43 hr
Battery cycles 2000 cycles 1100 cycles
Battery life tests
Web browsing 11:10 hr 18:32 hr
Watching video 19:32 hr 28:44 hr
Gaming 06:22 hr 10:01 hr
Standby 132 hr 139 hr
General battery life
28:43 hr
OnePlus 15 +37%
39:14 hr

Main camera

Matrix 200 megapixels 50 megapixels
Image resolution 16320 x 12240 8192 x 6144
Zoom Optical, 5x Optical, 3.5x
Flash LED Dual LED
Stabilization Optical Optical
8K video recording Up to 30FPS Up to 30FPS
4K video recording Up to 120FPS Up to 120FPS
1080p video recording Up to 240FPS Up to 120FPS
Slow motion 240 FPS (1080p) 480 FPS (720p)
Angle of widest lens 120° 116°
Lenses 1) Standard: 200 MP
2) Telephoto: 50 MP
3) Telephoto: 10 MP
4) Ultrawide: 50 MP
1) Standard: 50 MP
2) Telephoto: 50 MP
3) Ultrawide: 50 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/1.8
Focal length 23 mm 24 mm
Sensor Samsung ISOCELL S5KHP2 Sony IMX906
Sensor size 1/1.3" (≈ 0.77 inch) 1/1.56" (≈ 0.64 inch)
Pixel size 0.6 micron 1 micron
Autofocus Laser autofocus Phase autofocus
Stabilization Optical Optical
Telephoto lens
Image resolution 50 MP 50 MP
Aperture f/3.4 f/2.8
Focal length 111 mm 85 mm
Sensor Sony IMX854 Samsung S5KJN5
Sensor size 1/2.52" (≈ 0.4 inch) 1/2.76" (≈ 0.36 inch)
Pixel size 0.7 micron 0.64 micron
Stabilization Optical Optical
Ultra-wide lens
Image resolution 50 MP 50 MP
Aperture f/1.9 f/2.0
Focal length 13 mm 16 mm
Sensor Samsung ISOCELL S5KJN3 OmniVision OV50D
Sensor size 1/2.5" (≈ 0.4 inch) 1/2.88" (≈ 0.35 inch)
Pixel size 0.7 micron 0.612 micron
Stabilization Digital Digital

DxOMark main camera tests

Photo quality
Video quality
Generic main camera score
Bokeh 165 -
Preview 81 -
Zoom 137 -
Samples Photo samples of Samsung Galaxy S25 Ultra from DxOMark -

Selfie camera

Megapixels 12 megapixels 32 megapixels
Image resolution 4000 x 3000 6560 x 4928
Aperture f/2.2 f/2.4
Focal length 26 mm 21 mm
Sensor Samsung S5K3LU Sony IMX709
Sensor size 1/3.2" (≈ 0.31 inch) 1/2.74" (≈ 0.36 inch)
Pixel size 1.12 micron 0.64 micron
Autofocus Phase autofocus (Dual Pixel) Phase autofocus
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 FPS 2160p (4K) at 60 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 6.0
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 Yes
GPS GPS, GLONASS, Beidou, Galileo, QZSS GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC
NFC* Yes Yes
Infrared port No Yes
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
5G support Yes Yes

Sound

Speakers Stereo Stereo
Headphone audio jack No No
FM radio No No
Dolby Atmos Yes No
Speakers test
Max loudness
93 dB
80.4 dB

Other

Category Flagship Flagship
Announced January 2025 October 2025
Release date February 2025 October 2025
Launch price (MSRP) $1299 $899
Successor - Samsung Galaxy S26 Ultra -
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
Further details
Notes on 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.
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the gaming, battery life, and connectivity are more important to you, then choose the OnePlus 15. But if the sound is more of a priority – go for the Samsung Galaxy S25 Ultra.

Cast your vote

So, which phone would you choose?
246 (24%)
779 (76%)
Total votes: 1025

User opinions

You can share your opinion or ask a question in the comments below
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Avatar
ComputerNerd November 20, 2025 at 01:37 PM
The OnePlus 15 seems great in a lot of ways. Examples: Battery life, CPU performance, durability, and exterior design. However, I do prefer Samsung's OneUi OS for day to day use more. Far more intelligent customization options. Both are bad for night photography in default settings, but Samsung S25 Ultra does have a "night mode" for decent night photography.
+10 Reply
Avatar
Lucsok November 13, 2025 at 08:09 PM
The OnePlus 15 12gb ram modells all have lppdr5x ultra ram, and all the 16gb versions have lppdr5x ultra+ ram. please fix it. thank you! :)
+1 Reply
Serhii November 14, 2025 at 08:41 AM
It is LPDDR5X memory. Appreciate your comment.
+2 Reply