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

Vivo iQOO 15R vs Vivo X300 Ultra

88 out 100
Vivo iQOO 15R
VS
94 out 100
Vivo X300 Ultra
Vivo iQOO 15R
Vivo X300 Ultra

Compared 2 smartphones : Vivo iQOO 15R Manufactured in March, 2026, with display 6.59 with chipsetQualcomm Snapdragon 8 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 Vivo iQOO 15R
  • Lighter design: 202g vs 232g
  • Higher battery capacity: 7600mAh vs 6600mAh
  • Newer Bluetooth version: 6.0 vs 5.4
Reasons to choose Vivo X300 Ultra
  • Larger display: 6.82in
  • Higher pixel density: 510ppi
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 8/256 GB
- 12/256 GB
- 12/512 GB		 - 12/256 GB
- 12/512 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Vivo iQOO 15R 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
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Vivo iQOO 15R
vs
Vivo X300 Ultra

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.59 in 6.82 in
Resolution 1260x2750 pixels 1440x3168 pixels
Aspect ratio 19.5:9 19.8:9
Pixel density 459 ppi 510 ppi
Refresh rate 144 Hz 144 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes
Max brightness n/a 1800 nits
HDR support Yes, HDR10+ Yes, Dolby Vision
Screen-to-body ratio 90.8 % 90.3 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 157.61 mm (6.21 in) 162.98 mm (6.42 in)
Width 74.42 mm (2.93 in) 76.81 mm (3.02 in)
Thickness 7.9 mm (0.31 in) 8.49 mm (0.33 in)
Weight 202 g (7.13 oz) 232 g (8.18 oz)
Water resistance IP69 IP69
Cooling system Vapor chamber Vapor chamber
Back panel Plastic Glass
Frame Metal Metal
Colors - Black
- Silver		 - Black
- Silver
- Green
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Vivo iQOO 15R
90.8 %
Vivo X300 Ultra
90.3 %

Performance

Testing Vivo iQOO 15R and Vivo X300 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Gen 5 Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 3000 MHz 4600 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture 6/3.32 () - 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 829 n/a
GPU Cores 1024 n/a
GPU Frequency 1200 MHz n/a
FLOPS 2457.6 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Vivo iQOO 15R
2698
Vivo X300 Ultra
3621
Geekbench 6 (Multi-Core)
Vivo iQOO 15R
8830
Vivo X300 Ultra
10653
Geekbench 6 (Single-Core)26983621
Geekbench 6 (Multi-Core)883010653
Geekbench Compute (GPU)21113n/a
Sources: Geekbench v6 [Vivo iQOO 15R], [Vivo X300 Ultra]
AnTuTu 10
AnTuTu 10
Vivo iQOO 15R
3272562
Vivo X300 Ultra
4247433
CPU10183441192014
GPU9978451543938
Memory433367525105
UX823006986376
NanoReview Score32725624247433

Memory

RAM
RAM Size 8 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency n/a 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 OriginOS 6 OriginOS 6

Battery

Volume 7600 mAh 6600 mAh
Max Charging Power 100 W 100 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging No Yes (40 W)
Reverse Charging Yes Yes
Fast Charging Yes (46% in 30 min) Yes
Full Charge Time 1:04 h n/a

Main camera

Matrix 50 MP 200 MP
Photo resolution 8192x6144 pixels n/a
Zoom Digital Optical, 3.7x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording No Yes (Up to 30 fps)
4K Recording Yes (Up to 60 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 n/a 116 °
Lenses count Standard: 50 MP
Ultra-wide: 8 MP		 Standard: 200 MP
Telephoto: 200 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP200 MP
Aperturef/1.8f/1.9
Focal lengthn/a35 mm
Sensorn/aSony LYT-901
Sensor sizen/a1/1.12 (0.89)
Pixel sizen/a0.7 μm
AutofocusPhase autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrixn/a200 MP
Aperturen/af/2.7
Focal lengthn/a85 mm
Sensorn/aSamsung ISOCELL HPB
Sensor sizen/a1/1.4 (0.71)
Pixel sizen/a0.56 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix8 MP50 MP
Aperturef/2.2f/2.0
Focal length15 mm14 mm
Sensorn/aSony LYT-818
Sensor size1/4.0 (0.25)1/1.28 (0.78)
Pixel sizen/a1.22 μm
StabilizationDigitalOptical

Front camera

Matrix 32 MP 50 MP
Photo resolution n/a 8192x6144 pixels
Aperture f/2.2 f/2.5
Focal length n/a 24 mm
Sensor n/a Samsung ISOCELL JN1
Sensor size n/a 1/2.76 (0.36)
Pixel size n/a 0.64 μm
Autofocus No Phase autofocus
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 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 2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - 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 *NoNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800MHzn/a
3G BandsWCDMA B1/B5/B6/B8/B19n/a
LTE Bands*LTE (B1/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B32/B71)n/a
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos n/a Yes

Other

Class Mid-range Flagship
Announced February, 2026 yr March, 2026 yr
Release Date March, 2026 yr April, 2026 yr
MSRP ($) 495 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, 100 W Yes, 80 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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