Vivo iQOO 15 vs Samsung Galaxy S25 Ultra
93
out of 100
VS
87
out of 100
Here we compared two flagship smartphones: the 6.85-inch Vivo iQOO 15 (with Qualcomm Snapdragon 8 Elite Gen 5) that was released on October 20, 2025, against the Samsung Galaxy S25 Ultra, which is powered by Qualcomm Snapdragon 8 Elite and came out 9 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
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Key differences
Reasons to consider the Vivo iQOO 15
- Delivers 107% higher peak brightness (2928 against 1413 nits)
- Comes with 2000 mAh larger battery capacity: 7000 vs 5000 mAh
- Shows 37% longer battery life (39:26 vs 28:43 hours)
- Higher display refresh rate – 144 Hz
- Newer Bluetooth version (v6.0)
- Waterproof body (IP69 classification)
- Supports higher wattage charging (100W versus 45W)
- 26% better performance in AnTuTu Benchmark (3950K versus 3128K)
- Has 2 SIM card slots
- Has a built-in infrared port
Reasons to consider the Samsung Galaxy S25 Ultra
- The rear camera has a 5x optical zoom
- Supports Dolby Atmos sound technology
Review
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.
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Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | AMOLED | Dynamic AMOLED |
| Size | 6.85 inches | 6.9 inches |
| Resolution | 1440 x 3168 pixels | 1440 x 3120 pixels |
| Aspect ratio | 20:9 | 19.5:9 |
| PPI | 508 ppi | 498 ppi |
| Refresh rate | 144 Hz | 120 Hz |
| Adaptive refresh rate | Yes (1-120 Hz) | Yes (1-120 Hz) |
| Max rated brightness | 2600 nits | - |
| Max rated brightness in HDR | 6000 nits | 2600 nits |
| HDR support | Yes, Dolby Vision | Yes, HDR10+ |
| Touch sampling rate | - | 240 Hz |
| Screen protection | Tempered glass | Corning Gorilla Armor 2 |
| Screen-to-body ratio | 90.2% | 92.4% |
| Display features | - DCI-P3 - Always-On Display - DC Dimming |
- DCI-P3 - Always-On Display - DC Dimming |
| RGB color space | 100% | 97.7% |
| PWM | 561 Hz | 240 Hz |
| Response time | 1 ms | 1 ms |
| Contrast | ∞ Infinity | ∞ Infinity |
Peak brightness test (auto)
Design and build
| Height | 163.65 mm (6.44 inches) | 162.8 mm (6.41 inches) |
| Width | 76.8 mm (3.02 inches) | 77.6 mm (3.06 inches) |
| Thickness | 8.1 mm (0.32 inches) | 8.2 mm (0.32 inches) |
| Weight | 220 g (7.76 oz) | 218 g (7.69 oz) |
| Waterproof | IP69 | IP68 |
| Advanced cooling | Vapor chamber | Vapor chamber |
| Rear material | Glass | Glass |
| Frame material | Metal | Metal |
| Colors | White, Black, Blue | Black, Silver, Gray, Blue |
| Fingerprint scanner | Yes, in-display | Yes, in-display |
| Repairability | - | Good (3.23/5) |
| Drop resistance | - | Excellent (A) · 270 drops |
Screen-to-body ratio
Performance
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite |
| Max clock | 4610 MHz | 4470 MHz |
| CPU cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6 cores at 3.63 GHz: Oryon Gen 3 Performance - 2 cores at 4.74 GHz: Oryon Gen 3 Prime |
- 6 cores at 3.53 GHz: Oryon (Phoenix M) - 2 cores at 4.32 GHz: Oryon (Phoenix L) |
| L3 cache | 12 MB | 8 MB |
| Manufacturing | TSMC | TSMC |
| Lithography process | 3 nanometers | 3 nanometers |
| Neural processor (NPU) | Hexagon | Hexagon |
| Graphics | Adreno 840 | Adreno 830 |
| GPU shading units | 1536 | 1536 |
| GPU clock | 1300 MHz | 1100 MHz |
| FLOPS | ~3993.6 GFLOPS | ~3379.2 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 27247 | 26581 |
| Single-core score | 3584 | 3202 |
| Multi-core score | 11143 | 10347 |
AnTuTu Benchmark 11
| CPU | 1112833 | 987646 |
| GPU | 1494722 | 1190760 |
| Memory | 442350 | 362214 |
| UX | 900177 | 587932 |
| Total score | 3950082 | 3128552 |
| Samples | [24 tests] | [66 tests] |
3DMark Steel Nomad Light
| Stability | 54% | 61% |
| Graphics test | 21 FPS | 17 FPS |
| Graphics score | 2806 | 2272 |
3DMark Solar Bay
| Graphics test | 46 FPS | 40 FPS |
| Section 1 | 52 FPS | 50 FPS |
| Section 2 | 46 FPS | 40 FPS |
| Section 3 | 40 FPS | 29 FPS |
| Graphics score | 12156 | 10441 |
3DMark Wild Life Extreme
| Stability | - | 56% |
| Graphics test | 40 FPS | 34 FPS |
| Graphics score | 6752 | 5827 |
PCMark 3.0
| Web score | 14169 | 21582 |
| Video editing | 6652 | 8625 |
| Photo editing | 35337 | 34425 |
| Data manipulation | 14682 | 17556 |
| Writing score | 29367 | 26844 |
AnTuTu 11 Ranking List (30th and 86th place)
Recent User Tests
Vivo iQOO 15
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-09-11 (Rtesh) | AnTuTu 11 | 3886893 |
| 📘 2026-09-10 (Ranit) | AnTuTu 11 | 3974227 |
| 📘 2026-08-07 (tt:shikazik) | AnTuTu 11 | 4017492 |
| 📘 2026-07-17 (Skarvinarn) | AnTuTu 11 | 3902163 |
| 📘 2026-07-03 (cA27) | AnTuTu 11 | 4140036 |
Samsung Galaxy S25 Ultra
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-09-29 (VortexGen) | AnTuTu 12 | 3414404 |
| 📘 2026-09-06 (Trexsotiy) | Battery life | SOT 12:30 / 03:16 |
| 📘 2026-09-02 -> Mohamed_136 | Battery life | SOT 8:02 / 17:11 |
| 📘 2026-08-29 (PaWK) | AnTuTu 11 | 3034536 |
| 📘 2026-08-23 (Apple Slayer) | AnTuTu 11 | 3254557 |
Memory
| RAM size | 12 GB | 12 GB |
| Memory type | LPDDR5X | LPDDR5X |
| Memory clock | 5300 MHz | 5300 MHz |
| Channels | 4 | 4 |
| Storage size | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.0 |
| Memory card | No | No |
Software
| Operating system | Android 16 | Android 15 (Can be upgraded to Android 16) |
| ROM | OriginOS 6 | One UI 8.0 |
| OS size | 57 GB | 30.4 GB |
| OS updates | 5 years | 7 years |
| Security updates | 7 years | 7 years |
Battery
| Capacity | 7000 mAh | 5000 mAh |
| Max charge power | 100 W | 45 W |
| Battery type | Silicon-Carbon (Si/C) | Li-Ion |
| Replaceable | No | No |
| Wireless charging | Yes (40 W) | Yes (25 W) |
| Reverse charging | Yes, (wireless) | Yes, (wireless) |
| Bypass charging | Yes | Yes |
| Fast charging | Yes (60% in 30 min) | Yes (72% in 30 min) |
| Full charging time | 0:52 hr | 0:59 hr |
| Battery cycles | - | 2000 cycles |
| Web browsing | 18:52 hr | 11:10 hr |
| Watching video | 27:27 hr | 19:32 hr |
| Gaming | 09:04 hr | 06:22 hr |
| Standby | 147 hr | 132 hr |
General battery life
Smartphones With Long Battery Life (4th and 69th place)
Main camera
| Matrix | 50 megapixels | 200 megapixels |
| Image resolution | 8192 x 6144 | 16320 x 12240 |
| Zoom | Optical, 3x | Optical, 5x |
| Flash | Dual LED | LED |
| Stabilization | Optical | Optical |
| 8K video recording | Up to 30FPS | Up to 30FPS |
| 4K video recording | Up to 60FPS | Up to 120FPS |
| 1080p video recording | Up to 60FPS | Up to 240FPS |
| Slow motion | 240 FPS (1080p) | 240 FPS (1080p) |
| Angle of widest lens | 107° | 120° |
| Lenses | 1) Standard: 50 MP 2) Telephoto: 50 MP 3) Ultrawide: 50 MP |
1) Standard: 200 MP 2) Telephoto: 50 MP 3) Telephoto: 10 MP 4) Ultrawide: 50 MP |
| Camera features | - Bokeh mode - Pro mode - RAW support |
- Bokeh mode - Pro mode - RAW support |
| Image resolution | 50 MP | 200 MP |
| Aperture | f/1.9 | f/1.7 |
| Focal length | 23 mm | 23 mm |
| Sensor | Sony IMX921 | Samsung ISOCELL S5KHP2 |
| Sensor size | 1/1.56" (≈ 0.64 inch) | 1/1.3" (≈ 0.77 inch) |
| Pixel size | 1 micron | 0.6 micron |
| Autofocus | Phase autofocus | Laser autofocus |
| Stabilization | Optical | Optical |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/2.7 | f/3.4 |
| Focal length | 85 mm | 111 mm |
| Sensor | Sony IMX882 | Sony IMX854 |
| Sensor size | 1/1.95" (≈ 0.51 inch) | 1/2.52" (≈ 0.4 inch) |
| Pixel size | 0.8 micron | 0.7 micron |
| Stabilization | Optical | Optical |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/2.1 | f/1.9 |
| Focal length | 15 mm | 13 mm |
| Sensor | Samsung S5KJN1 | Samsung ISOCELL S5KJN3 |
| Sensor size | 1/2.76" (≈ 0.36 inch) | 1/2.5" (≈ 0.4 inch) |
| Pixel size | 0.64 micron | 0.7 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 | 32 megapixels | 12 megapixels |
| Image resolution | 6528 x 4896 | 4000 x 3000 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 21 mm | 26 mm |
| Sensor | GalaxyCore GC32E1 | Samsung S5K3LU |
| Sensor size | 1/3.1" (≈ 0.32 inch) | 1/3.2" (≈ 0.31 inch) |
| Pixel size | 0.7 micron | 1.12 micron |
| Autofocus | No | Phase autofocus (Dual Pixel) |
| 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 | 6.0 | 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 | Yes | No |
| Number of SIM* | 2 | 1 |
| 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 | No | Yes |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | October 2025 | January 2025 |
| Release date | October 2025 | February 2025 |
| Launch price (MSRP) | $699 | $1299 |
| Successor | - | - Samsung Galaxy S26 Ultra |
| SAR (head) | - | 1.25 W/kg |
| SAR (body) | - | 1.42 W/kg |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Hall-effect sensor - Barometer - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | Yes, 100 W | 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 Vivo iQOO 15. But if the software and sound are more of a priority – go for the Samsung Galaxy S25 Ultra.
Cast your vote
Total votes: 213