Samsung
Device summary
vivo
X300 Ultra
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2026 |
| Starting price | $1,300 | — |
| Display size | 6.9-inch | 6.8-inch |
| Dimensions | 77.6 mm × 162.8 mm × 8.2 mm | 76.8 mm × 163.0 mm × 8.2 mm |
| Weight | 218 g | 232 g |
| Front material | Corning Gorilla Armor 2 | — |
| Back material | — | — |
| Display | ||
| Display technology | Dynamic AMOLED 2X | — |
| Refresh rate | 120 Hz | — |
| Protection | Corning Gorilla Armor 2 | — |
| Resolution | — | 3168 × 1440 |
| Performance | ||
| Chipset | Snapdragon 8 Elite for Galaxy | Snapdragon 8 Elite Gen 5 |
| RAM | 12 GB | 16 GB |
| Storage | 256 GB, 512 GB, 1024 GB | 512 GB |
| Expandable storage | No | — |
| Cameras | ||
| Main camera | Wide · 200 MP · ƒ/1.7 · OIS | Main · 200 MP · ƒ/1.85 · OIS |
| Ultra-wide camera | Ultra Wide · 50 MP · ƒ/1.9 | Ultra Wide · 50 MP · ƒ/2.0 |
| Telephoto camera | Telephoto · 10 MP · ƒ/2.4 · 3x Optical Zoom · OIS | Telephoto · 200 MP · ƒ/2.67 · OIS |
| Rear camera 4 | Telephoto · 50 MP · ƒ/3.4 · 5x Optical Zoom · OIS | — |
| Front cameras | Front · 12 MP · ƒ/2.2 | Front · 50 MP · ƒ/2.45 |
| Battery & charging | ||
| Wired charging | 45 W | 100 W |
| Charging standard | Fast Wireless Charging 2.0, Wireless PowerShare | — |
| Typical capacity | 5000 mAh | 6600 mAh |
| Rated capacity | 4855 mAh | 6395 mAh |
| Connectivity | ||
| Cellular | 5G, LTE | 5G, LTE |
| Wi‑Fi | Wi‑Fi 7 | Wi‑Fi 6E |
| Bluetooth | Bluetooth 5.4 | Bluetooth 6.0 |
| USB | USB‑C | USB 3.2 |
| NFC | Yes | — |
| eSIM | Yes | — |
| Build & durability | ||
| Frame | Titanium | — |
| Ingress protection | IP68 | — |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2026 |
| Starting price | $1,300 | — |
| Display size | 6.9-inch | 6.8-inch |
| Dimensions | 77.6 mm × 162.8 mm × 8.2 mm | 76.8 mm × 163.0 mm × 8.2 mm |
| Weight | 218 g | 232 g |
| Front material | Corning Gorilla Armor 2 | — |
| Back material | — | — |
| Display | ||
| Display technology | Dynamic AMOLED 2X | — |
| Refresh rate | 120 Hz | — |
| Protection | Corning Gorilla Armor 2 | — |
| Resolution | — | 3168 × 1440 |
| Performance | ||
| Chipset | Snapdragon 8 Elite for Galaxy | Snapdragon 8 Elite Gen 5 |
| RAM | 12 GB | 16 GB |
| Storage | 256 GB, 512 GB, 1024 GB | 512 GB |
| Expandable storage | No | — |
| Cameras | ||
| Main camera | Wide · 200 MP · ƒ/1.7 · OIS | Main · 200 MP · ƒ/1.85 · OIS |
| Ultra-wide camera | Ultra Wide · 50 MP · ƒ/1.9 | Ultra Wide · 50 MP · ƒ/2.0 |
| Telephoto camera | Telephoto · 10 MP · ƒ/2.4 · 3x Optical Zoom · OIS | Telephoto · 200 MP · ƒ/2.67 · OIS |
| Rear camera 4 | Telephoto · 50 MP · ƒ/3.4 · 5x Optical Zoom · OIS | — |
| Front cameras | Front · 12 MP · ƒ/2.2 | Front · 50 MP · ƒ/2.45 |
| Battery & charging | ||
| Wired charging | 45 W | 100 W |
| Charging standard | Fast Wireless Charging 2.0, Wireless PowerShare | — |
| Typical capacity | 5000 mAh | 6600 mAh |
| Rated capacity | 4855 mAh | 6395 mAh |
| Connectivity | ||
| Cellular | 5G, LTE | 5G, LTE |
| Wi‑Fi | Wi‑Fi 7 | Wi‑Fi 6E |
| Bluetooth | Bluetooth 5.4 | Bluetooth 6.0 |
| USB | USB‑C | USB 3.2 |
| NFC | Yes | — |
| eSIM | Yes | — |
| Build & durability | ||
| Frame | Titanium | — |
| Ingress protection | IP68 | — |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Galaxy S25 Ultra
14 g lighter
Width
Galaxy S25 Ultra
0.8 mm wider · minor difference
Height
Very similar height
Thickness
Very similar thickness
What these size differences mean
Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.
- Galaxy S25 Ultra is 0.8 mm (1% relative to X300 Ultra) wider. Check this difference against the width of your current device and pocket opening.
- X300 Ultra is 0.2 mm (0.1% relative to Galaxy S25 Ultra) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Both have the same listed thickness (8.2 mm) at the displayed precision. Cases and camera protrusions can change the clearance you need.
- Galaxy S25 Ultra is 14 g lighter. This is the listed device-weight difference, not a measured comfort rating.
Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.
Size in everyday life
Picture it in your front pocket.
2018 US jeans study · 20 brands · 80 pairs · Approx. 32-inch waists
Galaxy S25 Ultra
X300 Ultra
Sources and measurement notes
Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.
Galaxy S25 Ultra
Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.
Galaxy S25 Ultra vs X300 Ultra Size Comparison
Related size comparisons
User Experience Summary
Galaxy S25 Ultra
Strengths
- Gorilla Armor anti-reflective display for outdoor clarity
- Versatile cameras with 5x periscope and 200MP main
- S Pen productivity and titanium durability
Compromises
- Heavy, wide chassis limits one-handed and pocket comfort
- 45W charging not class-leading
- Fingerprint sensor occasionally inconsistent
X300 Ultra
Strengths
- Class-leading Zeiss imaging with 200 MP main and periscope telephoto
- Sharp 6.82-inch QHD+ AMOLED with adaptive 144 Hz
- Elite Gen 5 speed with 100 W wired and 40 W wireless charging
Compromises
- Heavy 232 g phablet ergonomics versus X300 FE and standard flagships
- OriginOS 6 promotional surfaces at Ultra pricing
- Thermal warmth during sustained 4K video and gaming