Home Phone comparison OnePlus 15 and Vivo X300 Ultra - Which is better?

OnePlus 15 vs Vivo X300 Ultra

91 out 100
OnePlus 15
VS
94 out 100
Vivo X300 Ultra
OnePlus 15
Vivo X300 Ultra

Compared 2 smartphones : OnePlus 15 Manufactured in October, 2025, with display 6.78 with chipsetQualcomm Snapdragon 8 Elite Gen 5, vs Vivo X300 Ultra, Manufactured in April, 2026with chipsetQualcomm Snapdragon 8 Elite Gen 5. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose OnePlus 15
  • Higher refresh rate: 165Hz
  • Lighter design: 211g vs 232g
  • Higher battery capacity: 7300mAh vs 6600mAh
  • Newer Bluetooth version: 6.0 vs 5.4
  • Built-in eSIM
Reasons to choose Vivo X300 Ultra
  • Larger display: 6.82in
  • Higher pixel density: 510ppi
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB		 - 12/256 GB
- 12/512 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs OnePlus 15 and Vivo X300 Ultra
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
OnePlus 15
vs
Vivo X300 Ultra

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.78 in 6.82 in
Resolution 1272x2772 pixels 1440x3168 pixels
Aspect ratio 19.5:9 19.8:9
Pixel density 450 ppi 510 ppi
Refresh rate 165 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes
Max brightness 1800 nits 1800 nits
HDR support Yes, Dolby Vision Yes, Dolby Vision
Screen-to-body ratio 91.2 % 90.3 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 161.4 mm (6.35 in) 162.98 mm (6.42 in)
Width 76.7 mm (3.02 in) 76.81 mm (3.02 in)
Thickness 8.1 mm (0.32 in) 8.49 mm (0.33 in)
Weight 211 g (7.44 oz) 232 g (8.18 oz)
Water resistance IP69 IP69
Cooling system Vapor chamber Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - Black
- Gold
- Purple		 - Black
- Silver
- Green
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
OnePlus 15
91.2 %
Vivo X300 Ultra
90.3 %

Performance

Testing OnePlus 15 and Vivo X300 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Gen 5 Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 4600 MHz 4600 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture 6/3.63 () - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 840 n/a
GPU Cores 1536 n/a
GPU Frequency 1200 MHz n/a
FLOPS 3686.4 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
OnePlus 15
3726
Vivo X300 Ultra
3621
Geekbench 6 (Multi-Core)
OnePlus 15
11199
Vivo X300 Ultra
10653
Geekbench 6 (Single-Core)37263621
Geekbench 6 (Multi-Core)1119910653
Geekbench Compute (GPU)27829n/a
Sources: Geekbench v6 [OnePlus 15], [Vivo X300 Ultra]
AnTuTu 10
AnTuTu 10
OnePlus 15
3434737
Vivo X300 Ultra
4247433
CPU9689351192014
GPU12353071543938
Memory489823525105
UX740672986376
NanoReview Score34347374247433

Memory

RAM
RAM Size 12 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5300 MHz 5333 MHz
Channels 4 4
Storage
Storage Capacity256 GB256 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 16 Android 16
UI Skin OxygenOS 16 OriginOS 6

Battery

Volume 7300 mAh 6600 mAh
Max Charging Power 120 W 100 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (50 W) Yes (40 W)
Reverse Charging Yes, (Wireless) Yes
Fast Charging Yes (50% in 15 min) Yes
Full Charge Time 0:43 h n/a

Main camera

Matrix 50 MP 200 MP
Photo resolution 8192x6144 pixels n/a
Zoom Optical, 3.5x Optical, 3.7x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
4K Recording Yes (Up to 120 fps) Yes (Up to 120 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion n/a 240 fps (1080p)
Wide-angle lens 116 ° 116 °
Lenses count Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP		 Standard: 200 MP
Telephoto: 200 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP200 MP
Aperturef/1.8f/1.9
Focal length24 mm35 mm
SensorSony LYTIA-T808Sony LYT-901
Sensor size1/1.561/1.12 (0.89)
Pixel size1 μm0.7 μm
AutofocusPhase autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrix50 MP200 MP
Aperturef/2.8f/2.7
Focal length85 mm85 mm
SensorSamsung S5KJN5Samsung ISOCELL HPB
Sensor size1/2.761/1.4 (0.71)
Pixel size0.64 μm0.56 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.0f/2.0
Focal length15 mm14 mm
SensorSamsung S5KJN5Sony LYT-818
Sensor size1/2.761/1.28 (0.78)
Pixel size0.64 μm1.22 μm
StabilizationDigitalOptical

Front camera

Matrix 32 MP 50 MP
Photo resolution 6560x4928 pixels 8192x6144 pixels
Aperture f/2.4 f/2.5
Focal length 21 mm 24 mm
Sensor Sony IMX615 Samsung ISOCELL JN1
Sensor size 1/2.74 1/2.76 (0.36)
Pixel size 0.8 μm 0.64 μm
Autofocus Phase autofocus Phase autofocus
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version 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
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos No Yes

Other

Class Flagship Flagship
Announced October, 2025 yr March, 2026 yr
Release Date October, 2025 yr April, 2026 yr
MSRP ($) 899 1199
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes, 120 W Yes, 80 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

No clear favorite identified yet; updates may follow as new data arrives.

Survey

Which smartphone would you pick?
7 (50%)
7 (50%)
Total Votes: 14

User comments

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