Galaxy S26+ vs vivo X300 Ultra
Shopping across brands means comparing different philosophies. The Galaxy S26+ and the vivo X300 Ultra show how Samsung and Vivo each approach the flagship smartphone class. Scoring each area separately, the vivo X300 Ultra comes out on top 2 times out of 4. Its lead is sharpest in battery & charging.
At a glance
- Performance Tie
- Memory & Storage Tie
- Camera vivo X300 Ultra wins
- Battery & Charging vivo X300 Ultra wins
Key Differences
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The vivo X300 Ultra has 35% more battery capacity
The Galaxy S26+ is clearly behind on battery capacity (4,900 mAh against 6,600 mAh), and that’s one of its biggest weak spots in this matchup. Capacity isn’t everything, but when two phones are otherwise close, more milliamp-hours is the simplest endurance advantage there is.
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The vivo X300 Ultra has a higher-resolution 200 MP main camera
On this line of the spec sheet, the vivo X300 Ultra is in a different league: 200 MP, next to 50 MP for the Galaxy S26+. Megapixels are only one part of image quality, so treat this as a sign of detail potential, not a verdict on photos.
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The vivo X300 Ultra has a tougher IP68/IP69 rating
It’s a fine margin, and it favors the vivo X300 Ultra (IP68/IP69 versus IP68). A higher water and dust rating gives more peace of mind around rain, spills, beaches and pools.
Design & Size
There’s no meaningful size difference between the Galaxy S26+ and the vivo X300 Ultra.
Design & Build
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Height | N/A (not specified) | 6.42 in |
| Width | N/A (not specified) | 3.02 in |
| Thickness | N/A (not specified) | 0.32 in |
| Weight | N/A (not specified) | 8.18 oz |
| Water & dust rating | IP68 | IP68/IP69 (winner) |
| Frame | N/A (not specified) | Aluminum |
Display
The display entries below are descriptive rather than numeric. Read them side by side to see where the Galaxy S26+ and the vivo X300 Ultra part ways.
Performance
Too close to call
Call the performance round a draw. If performance was going to be your tiebreaker, you’ll need a different one.
Memory & Storage
Too close to call
There’s little to choose between them when it comes to memory & storage. In short, memory & storage is a draw; the decision lies elsewhere.
Camera
vivo X300 Ultra leads
For camera, the verdict is easy: the vivo X300 Ultra leads, and not by a little. On its side, the vivo X300 Ultra has a higher-resolution 200 MP main camera. The vivo X300 Ultra’s higher-resolution main sensor gives you more room to crop, which helps when you can’t get closer. For anyone who cares most about camera, the vivo X300 Ultra is the safer choice.
Main camera
Galaxy S26+: 50 MP vivo X300 Ultra: 200 MP More megapixels on the main camera allow bigger crops and more detail in good light, but sensor size and processing matter just as much.
Battery & Charging
vivo X300 Ultra leads
The Galaxy S26+ is outclassed on battery & charging; the vivo X300 Ultra leads by a clear margin. The vivo X300 Ultra makes its case with 35% more battery capacity. Extra capacity also ages better: after a few years of charge cycles, the vivo X300 Ultra has more headroom left. So if battery & charging tops your list, lean toward the vivo X300 Ultra.
Battery capacity
Galaxy S26+: 4,900 mAh vivo X300 Ultra: 6,600 mAh A bigger battery usually means longer days between charges, although chip efficiency and screen size also shape real endurance.
Software & Updates
The software & updates comparison is about what’s inside rather than how much. See the table for the Galaxy S26+’s and the vivo X300 Ultra’s entries.
Full Specifications
Display
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Screen size | 6.7 in | 6.8 in |
| Panel type | Dynamic AMOLED 2X | LTPO AMOLED |
| Resolution | N/A (not specified) | 3168 x 1440 |
| Refresh rate | N/A (not specified) | 144 Hz |
| Always-on display | Yes | N/A (not specified) |
Performance
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite Gen 5 for Galaxy (US) | Snapdragon 8 Elite Gen 5 |
| CPU cores | N/A (not specified) | 8 |
| Process node | N/A (not specified) | 3 nm |
| RAM | 12 GB | 12 GB |
Memory & Storage
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Base storage | 256 GB | 256 GB |
| Max storage | N/A (not specified) | 1 TB |
| microSD slot | No | No |
Camera
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Main camera | 50 MP | 200 MP (winner) |
| Ultra-wide camera | N/A (not specified) | 50 MP |
| Telephoto camera | N/A (not specified) | 200 MP |
| Optical zoom | N/A (not specified) | 3.7× |
| Rear cameras | N/A (not specified) | 3 |
| Front camera | N/A (not specified) | 50 MP |
| Max video | N/A (not specified) | 8K30 |
Battery & Charging
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Battery capacity | 4,900 mAh | 6,600 mAh (winner) |
| Wired charging | N/A (not specified) | 100 W |
| Wireless charging | N/A (not specified) | 40 W |
| Port | USB-C | USB-C (USB 3.2) |
Software & Updates
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| OS at launch | Android 16 (One UI 8.5) | OriginOS 6 (Android 16) |
| Promised OS updatesManufacturer commitment | 7 years | N/A (not specified) |
Design & Build
| Spec | Galaxy S26+ | vivo X300 Ultra |
|---|---|---|
| Height | N/A (not specified) | 6.42 in |
| Width | N/A (not specified) | 3.02 in |
| Thickness | N/A (not specified) | 0.32 in |
| Weight | N/A (not specified) | 8.18 oz |
| Water & dust rating | IP68 | IP68/IP69 (winner) |
| Frame | N/A (not specified) | Aluminum |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the Galaxy S26+ if…
- you trust Samsung and want to keep things familiar
Choose the vivo X300 Ultra if…
- you want the bigger battery (6,600 mAh vs 4,900 mAh)
- you want the higher-resolution main camera (200 MP vs 50 MP)
- you want better protection against water and dust (IP68/IP69 vs IP68)
Also Compared
Frequently Asked Questions
Which is better for most people, the Galaxy S26+ or the vivo X300 Ultra?
On the specs compared here, the vivo X300 Ultra makes more sense for most buyers; the Galaxy S26+ doesn’t win a single measurable area.
Which has better battery life, the Galaxy S26+ or the vivo X300 Ultra?
The vivo X300 Ultra does better here. It lists 6,600 mAh for battery capacity, while the Galaxy S26+ lists 4,900 mAh.
Is the Galaxy S26+ bigger than the vivo X300 Ultra?
Neither by much. The Galaxy S26+ and the vivo X300 Ultra have nearly identical dimensions.
Which has the better camera, the Galaxy S26+ or the vivo X300 Ultra?
The vivo X300 Ultra leads on camera specs thanks to a higher-resolution 200 MP main camera. Processing and personal taste also play a big part in photos.
Executive Summary
Let’s set the logos aside for a minute. The Galaxy S26+ and the vivo X300 Ultra are close competitors, and their spec sheets tell an interesting story. I keep coming back to one thing: the vivo X300 Ultra gets 35% more battery capacity. On top of that, the vivo X300 Ultra adds a higher-resolution 200 MP main camera.
The Galaxy S26+ is for you if the things a spec sheet can’t capture tops your list; the vivo X300 Ultra is for you if camera does.
My pick: the vivo X300 Ultra.
Personal opinion based on the data above. Your priorities may differ.