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InnoReviews

iQOO 15 Ultra vs Vivo X300s

WINNER
iQOO 15 Ultra
87.8Inno Score
VS
Vivo X300s
83.2Inno Score
99.6Performance85.8
90.4Display78.5
65.5Camera78.1
90.2Battery88.7
86.7Features84
10 spec wins — iQOO 15 Ultra5 spec wins — Vivo X300s

InnoReviews verdict

iQOO 15 Ultra wins this phone face-off, 87.8 to 83.2, pulling ahead mainly in performance (+14) and display (+12). Vivo X300s still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the iQOO 15 Ultra

  • Stronger performance score: 100 vs 86
  • Stronger display score: 90 vs 79
  • 50% higher RAM (max): 24 GB vs 16 GB
  • 27% higher AnTuTu 11 (UX): 918,290 vs 722,836
  • 24% higher AnTuTu: 4,118,578 vs 3,324,990

Reasons to pick the Vivo X300s

  • Stronger camera score: 78 vs 66
  • 300% higher Main camera: 200 MP vs 50 MP
  • 56% higher Front camera: 50 MP vs 32 MP
  • Has eSIM — the other doesn't

Display

Display comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
Screen size6.85 ″+1%6.78 ″
Panel typeAMOLEDLTPO AMOLED
Resolution1440x31681260x2800
Pixel density508 ppi+12%452 ppi
Refresh rate144 Hz144 Hz
Peak brightness8,000 nits—
Screen-to-body—91.1 %

Performance

Performance comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
ChipsetSnapdragon 8 Elite Gen 5MediaTek Dimensity 9500
AnTuTu 114,118,578+24%Top 1%3,324,990Top 11%
AnTuTu 11 (CPU)1,124,295+24%Top 2%908,288Top 15%
AnTuTu 11 (GPU)1,528,317+24%Top 1%1,236,032Top 11%
AnTuTu 11 (Memory)547,676+20%Top 1%457,834Top 11%
AnTuTu 11 (UX)918,290+27%Top 1%722,836Top 11%
RAM (max)24 GB+50%16 GB
Storage options256GB/512GB/1TB256/512GB/1TB
Storage typeUFS 4.1UFS 4.1

Camera

Camera comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
Main camera50 MP200 MP+300%
Main aperturef/1.88f/1.68
Ultra-wide50 MP50 MP
Telephoto50 MP50 MP
Optical zoom3 x3 x
Max video8K@30fps4K@120fps
Front camera32 MP50 MP+56%
OISYesYes

Battery

Battery comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
Capacity7,400 mAh+4%7,100 mAh
Wired charging100 W+11%90 W
Wireless charging40 W40 W

Design

Design comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
Weight227 g217 g+4%
Thickness8.7 mm8 mm+8%
IP ratingIP68/IP69IP68/IP69
Frame material—Aluminum

Connectivity

Connectivity comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
5GYesYes
Wi-FiWi-Fi 7Wi-Fi 7
Bluetooth6.05.4
NFCYesYes
USBUSB-C 3.2 Gen 1USB-C 3.2
eSIMNoYes

Software

Software comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
OS at launchAndroid 16 (OriginOS 6)Android 16 (OriginOS 6)
OS update pledge—5 years

Audio

Audio comparison: iQOO 15 Ultra versus Vivo X300s
SpeciQOO 15 UltraVivo X300s
Stereo speakersYesYes
3.5mm jackNoNo

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