15R vs X300
True-scale visual comparison — see exact mm dimensions side by side with detailed specs.
100% Objective Comparisons — Data sourced from official manufacturers
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100%
X300 is 0.8% taller
15R
162.7mm×75.4mm
VS
X300
164mm×75mm
Scaled to real proportions
Specifications Comparison
A
15R
OnePlus
1 wins
B
X300
vivo
3 wins
S
Screen Size
= Tie
15R
6.7"
X300
6.7"
Difference:
0"
B
Battery
Better
15R
4,500mAh
X300
5,000mAh
Difference:
500mAh
(11.1% more)
R
RAM
= Tie
15R
8GB
X300
8GB
Difference:
0GB
W
Weight
Better
15R
190g
X300
192g
Difference:
2g
(1.1% less)
S
Storage
= Tie
15R
128GB
X300
128GB
Difference:
0GB
M
Main Camera
Better
15R
50MP
X300
64MP
Difference:
14MP
(28.0% more)
P
Price
Better
15R
699$
X300
299$
Difference:
400$
(133.8% less)
H
Height
15R
162.7mm
X300
164mm
W
Width
15R
75.4mm
X300
75mm
T
Thickness
= Tie
15R
8.5mm
X300
8.5mm
Difference:
0mm
15R
X300
Winner in category
Last updated: March 23, 2026
Source: Official Source
Last updated: March 23, 2026
Source: Official Source
Why Trust Our Comparisons
Verified Data
All specs verified from official sources
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Regularly Updated
Data refreshed when specs change
Transparent Method
Our comparison methodology is public