Galaxy S27 Ultra vs Vivo X300s: Which One Should You Buy?

Galaxy S27 Ultra edges ahead with a BeastScore of 95.0/100 — but the right choice depends on what matters to you.

Head-to-head
Comparing 2 devicesSwipe ⇄
Samsung · 2027

Galaxy S27 Ultra

Galaxy S27 Ultra
95/ 100
Launch pricePrice on request
Vivo · 2026

Vivo X300s

Vivo X300s
93/ 100
Launch price$799
Head-to-head

Galaxy S27 Ultra wins 3 of 5 categories

Here's exactly where each phone is stronger.

Galaxy S27 Ultra
Galaxy S27 Ultra
3 wins
Vivo X300s
Vivo X300s
2 wins
At a glance

Bigger shape = better phone.

SpeedCameraBatteryDisplayValue
Galaxy S27 UltraVivo X300s
Category winners

Scores out of 100. How we score

  • SpeedGalaxy S27 Ultra
    98
    90
  • CameraVivo X300s
    96
    100
  • VideoNot enough data
  • SelfieNot enough data
  • BatteryVivo X300s
    90
    98
  • DisplayGalaxy S27 Ultra
    98
    96
  • ConnectivityNot enough data
  • SecurityNot enough data
  • ValueGalaxy S27 Ultra
    80
    68
Key differences
  • Vivo X300s has the bigger battery7,100 mAh vs 5,700 mAh
  • Galaxy S27 Ultra has the bigger screen6.9" vs 6.78"
  • Vivo X300s has the faster chipDimensity 9500 vs Snapdragon 8 Elite Extreme Gen 6
See all specs ↓

Why buy each phone

Swipe ⇄
Reasons to buy Galaxy S27 Ultra
  • ✓200 MP main camera
  • ✓6.9" display at 144 Hz
Reasons to buy Vivo X300s
  • ✓Bigger 7,100 mAh battery (+1,400 mAh)
  • ✓200 MP main camera
  • ✓6.78" display at 144 Hz

Full specifications

Swipe ⇄
SpecificationGalaxy S27 UltraVivo X300s
1. Display & Screen🏆 Galaxy S27 Ultra Wins Display
Screen typeDynamic AMOLED (M16)LTPO AMOLED
Screen Size6.9"6.78"
Resolution & DensityN/A 2800x1260 (460 ppi)
Refresh Rate144 Hz144 Hz adaptive
Brightness2,600 nits peak4,500 nits peak
Screen ProtectionNot listedNot listed
2. Platform & Performance🏆 Galaxy S27 Ultra Wins Performance
Chipset / ProcessorSnapdragon 8 Elite Extreme Gen 6 (2nm)Dimensity 9500 (3nm)
CPU CoresNot listedNot listed
GPU GraphicsNot listedMali G1-Ultra
Operating SystemAndroid Android 16
3. Memory & Storage
RAM MemoryN/A12 GB LPDDR
Internal StorageN/A256GB / 512GB / 1024GB
Storage SpeedNot listedNot listed
Card SlotNoNo
4. Main Camera Optics🏆 Vivo X300s Wins Camera
Primary Camera200 MP, OIS200 MP, f/1.68, OIS, Samsung HPBr 1/1.4-inch
Telephoto Zoom50 MP (5x optical zoom)50 MP (3.7x optical zoom), f/2.6, OIS
Ultrawide Camera50 MP50 MP, f/2
LiDAR / DepthNoneNone
5. Video
Main Camera Video
Not listed
Not listed
Front Video
Not listed
Not listed
6. Selfie Camera
Selfie LensN/A50 MP, f/2
7. Body & Dimensions
DimensionsN/A162.5 x 76.3 x 8.2 mm
WeightN/A218 g
Build MaterialsNot listedNot listed
SIM TypeNot listedNot listed
Water ResistanceNot listedIP69
8. Battery & Charging🏆 Vivo X300s Wins Battery
Battery Capacity5,700 mAh7,100 mAh
Wired Fast ChargingN/A90W wired fast charging
Wireless ChargingNot listed40W wireless charging
Reverse ChargingNot listedNot listed
9. Sound & Audio
LoudspeakerNot listedNot listed
3.5mm Headphone JackNoNo
10. Connectivity
Wi-Fi StandardNot listedWi-Fi 7
BluetoothNot listed6.0
USB Port & SpeedNot listedUSB-C 3.2
NFCYesYes (contactless payment)
11. Sensors & Security
SensorsNot listedNot listed
Satellite FeaturesNot listedNot listed
12. Colors & Overview
ColorsNot listedNot listed
Launch PricePrice on request$799
Our verdict

Galaxy S27 Ultra wins — BeastScore 95.0/100

The Galaxy S27 Ultra is the better pick for most people thanks to its bigger screen (6.9" vs 6.78"). The Vivo X300s is worth a look if you prefer its bigger battery (7,100 mAh vs 5,700 mAh).

Buy Galaxy S27 Ultra if you want

Reliable all-round performance.

Buy Vivo X300s if you want

Larger battery: 7,100 mAh vs 5,700 mAh · Brighter screen: 4,500 nits vs 2,600 nits

Common questions

Which is better: Galaxy S27 Ultra or Vivo X300s?

The Galaxy S27 Ultra is the better pick for most people thanks to its bigger screen (6.9" vs 6.78"). The Vivo X300s is worth a look if you prefer its bigger battery (7,100 mAh vs 5,700 mAh). BeastScore: Galaxy S27 Ultra 95.0/100, Vivo X300s 93.1/100.

What are the main battery and display differences between Galaxy S27 Ultra and Vivo X300s?

Galaxy S27 Ultra has a 6.9-inch display and 5700 mAh battery. Vivo X300s has a 6.78-inch display and 7100 mAh battery.

How do Galaxy S27 Ultra and Vivo X300s compare for speed?

Galaxy S27 Ultra scores 98/100 for performance; Vivo X300s scores 90/100.

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