17 Ultra (China) vs Y31d

Side-by-side comparison with real-scale visuals and detailed specifications

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

Y31d is 1.1% taller

17 Ultra (China)

162.5mm×75.8mm

Y31d

164.3mm×76.3mm

Scaled to real proportions

Specifications Comparison

17 Ultra (China)

Xiaomi

4 wins

Y31d

vivo

3 wins

📱

Screen Size

Diagonal screen measurement

Better

17 Ultra (China)

6.73"

Y31d

6.7"

Difference: 0.03" (0.4% more)

🔋

Battery

Battery capacity in milliamp-hours

= Tie

17 Ultra (China)

5,000mAh

Y31d

5,000mAh

Difference: 0mAh

💾

RAM

Random Access Memory for multitasking

Better

17 Ultra (China)

12GB

Y31d

8GB

Difference: 4GB (50.0% more)

⚖️

Weight

Total device weight

Better

17 Ultra (China)

228g

Y31d

190g

Difference: 38g (20.0% less)

💿

Storage

Internal storage capacity

Better

17 Ultra (China)

256GB

Y31d

128GB

Difference: 128GB (100.0% more)

📷

Main Camera

Main camera resolution

Better

17 Ultra (China)

200MP

Y31d

64MP

Difference: 136MP (212.5% more)

💰

Price

Retail price in USD

Better

17 Ultra (China)

899$

Y31d

299$

Difference: 600$ (200.7% less)

📏

Height

Device height

17 Ultra (China)

162.5mm

Y31d

164.3mm

📐

Width

Device width

17 Ultra (China)

75.8mm

Y31d

76.3mm

📦

Thickness

Device thickness/depth

Better

17 Ultra (China)

9.1mm

Y31d

8.3mm

Difference: 0.8mm (9.6% less)

17 Ultra (China)

Y31d

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

No Affiliate Bias

We don't earn from product sales

Regularly Updated

Data refreshed when specs change

Transparent Method

Our comparison methodology is public

SizeVS Editorial Team

Verified

Product Comparison Specialists

Our team of tech enthusiasts and data analysts work to provide accurate, unbiased product comparisons.

Verified Data Sources Editorial Standards

Updated: March 24, 2026

Our methodology

Explore this matchup

View 17 Ultra (China) View Y31d Screen Size Battery RAM Weight Storage

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