Samsung Galaxy S21 Ultra vs vivo X300 Ultra
The Verdict
The Samsung Galaxy S21 Ultra and vivo X300 Ultra sit in the same category and end up appealing to slightly different buyers. The vivo X300 Ultra is the cheaper of the two at $1,012 versus $1,199, a difference of about $187. The vivo X300 Ultra is the newer release, which usually means a faster chipset and longer software support. Samsung Galaxy S21 Ultra stands out for 100x space zoom with 10x optical telephoto, while vivo X300 Ultra is praised for bright 3000-nit amoled display with 120hz refresh rate. Use the side-by-side spec table below to compare cameras, displays, battery life and connectivity in detail and decide which one fits your priorities.
Who Should Buy
Buy the Samsung Galaxy S21 Ultra if…
- →100x Space Zoom with 10x optical telephoto
- →108 MP main sensor with excellent detail
- →S Pen support (first S-series to do so)
Buy the vivo X300 Ultra if…
- →Bright 3000-nit AMOLED display with 120Hz refresh rate
- →Powerful Snapdragon 8 Elite chipset for demanding tasks
- →Versatile triple camera setup with 50MP telephoto
Pros & Cons
Samsung Galaxy S21 Ultra
Pros
- 100x Space Zoom with 10x optical telephoto
- 108 MP main sensor with excellent detail
- S Pen support (first S-series to do so)
- 1440p 120Hz LTPO adaptive display
- 5000 mAh battery with all-day endurance
Cons
- Heavy at 227 g
- Snapdragon 888 can overheat under load
- S Pen sold separately, no silo slot
- Slow 25W charging for the class
- No charger or earbuds in the box
vivo X300 Ultra
Pros
- Bright 3000-nit AMOLED display with 120Hz refresh rate
- Powerful Snapdragon 8 Elite chipset for demanding tasks
- Versatile triple camera setup with 50MP telephoto
- Large 6000mAh battery with 80W fast charging
- Premium IP69 dust and water resistance rating
Cons
- Premium pricing may limit mainstream appeal
- Large 6.82-inch display not ideal for one-handed use
- Thermal management at high loads remains a concern
- No expandable storage option
Full Specifications
| Spec | Samsung Galaxy S21 Ultra | vivo X300 Ultra |
|---|---|---|
| Software | Android 11, One UI 3.1 | — |
| Body | ||
| Weight | 227 g | — |
| Material | Aluminum frame, Gorilla Glass Victus | — |
| IP rating | IP68 | — |
| Dimensions | 165.1 x 75.6 x 8.9 mm | — |
| Camera | ||
| Main camera | 108 MP, f/1.8, OIS | 50MP f/1.6 |
| Front camera | 40 MP, f/2.2 | 32MP f/2.45 |
| Video | 8K@24fps, 4K@60fps | — |
| Periscope | 10 MP, f/4.9, 10x optical zoom | — |
| Telephoto | 10 MP, f/2.4, 3x optical zoom | 50MP f/2.6 3x optical |
| Ultrawide | 12 MP, f/2.2 | 50MP f/2.2 |
| Memory | ||
| RAM | 12 GB | — |
| Storage options | 128 GB, 256 GB, 512 GB | — |
| Battery | ||
| Capacity | 5000 mAh | 6000mAh |
| Charging | 25W wired | — |
| Wireless charging | 15W wireless | — |
| Charging Speed | — | 80W wired |
| Wireless Charging | — | 50W |
| Display | ||
| Size | 6.8 inches | 6.82 inches |
| Type | Dynamic AMOLED 2X, LTPO | AMOLED |
| Resolution | 3200 x 1440 | 1440 x 3168 pixels |
| Refresh rate | 120Hz | 120Hz |
| Brightness (nits) | 1500 | — |
| Brightness | — | 3000 nits peak |
| Processor | ||
| CPU | Octa-core (1x2.84 GHz + 3x2.42 GHz + 4x1.8 GHz) | — |
| GPU | Adreno 660 | — |
| Chipset | Qualcomm Snapdragon 888 | — |
| Connectivity | ||
| 5G | — | |
| NFC | — | |
| USB | USB-C 3.2 | — |
| Wi-Fi | Wi-Fi 6 | — |
| Bluetooth | 5.2 | — |
| Design | ||
| Colors | — | Titanium Black, Titanium Gold, Titanium White |
| Weight | — | 221g |
| IP rating | — | IP69 |
| Performance | ||
| RAM | — | 12GB |
| Chipset | — | Snapdragon 8 Elite |
| Storage | — | 256GB / 512GB |
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