Galaxy S25 Ultra vs Redmi K90

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

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

Galaxy S25 Ultra is 2.8% taller

Galaxy S25 Ultra

162.8mm×77.6mm

Redmi K90

158.3mm×72.8mm

Scaled to real proportions

Specifications Comparison

Galaxy S25 Ultra

Samsung

3 wins

Redmi K90

Xiaomi

3 wins

📱

Screen Size

Diagonal screen measurement

Better

Galaxy S25 Ultra

6.8"

Redmi K90

6.7"

Difference: 0.1" (1.5% more)

🔋

Battery

Battery capacity in milliamp-hours

= Tie

Galaxy S25 Ultra

5,000mAh

Redmi K90

5,000mAh

Difference: 0mAh

💾

RAM

Random Access Memory for multitasking

Better

Galaxy S25 Ultra

12GB

Redmi K90

8GB

Difference: 4GB (50.0% more)

⚖️

Weight

Total device weight

Better

Galaxy S25 Ultra

218g

Redmi K90

198g

Difference: 20g (10.1% less)

💿

Storage

Internal storage capacity

= Tie

Galaxy S25 Ultra

256GB

Redmi K90

256GB

Difference: 0GB

📷

Main Camera

Main camera resolution

Better

Galaxy S25 Ultra

200MP

Redmi K90

108MP

Difference: 92MP (85.2% more)

💰

Price

Retail price in USD

Better

Galaxy S25 Ultra

753$

Redmi K90

599$

Difference: 154$ (25.7% less)

📏

Height

Device height

Galaxy S25 Ultra

162.8mm

Redmi K90

158.3mm

📐

Width

Device width

Galaxy S25 Ultra

77.6mm

Redmi K90

72.8mm

📦

Thickness

Device thickness/depth

Better

Galaxy S25 Ultra

8.2mm

Redmi K90

8.1mm

Difference: 0.1mm (1.2% less)

Galaxy S25 Ultra

Redmi K90

Winner in category

Last updated: March 23, 2026

Source: gsmarena.com

Last updated: March 23, 2026

Source: Official Source

Why Trust Our Comparisons

Verified Data

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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 Galaxy S25 Ultra View Redmi K90 Screen Size Battery RAM Weight Storage

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