Redmi K90 Pro Max vs F31 Pro+

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

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

Redmi K90 Pro Max is 2.2% taller

Redmi K90 Pro Max

163.5mm×75.2mm

F31 Pro+

160mm×74mm

Scaled to real proportions

Specifications Comparison

Redmi K90 Pro Max

Xiaomi

3 wins

F31 Pro+

Oppo

2 wins

📱

Screen Size

Diagonal screen measurement

= Tie

Redmi K90 Pro Max

6.7"

F31 Pro+

6.7"

Difference: 0"

🔋

Battery

Battery capacity in milliamp-hours

Better

Redmi K90 Pro Max

5,000mAh

F31 Pro+

4,500mAh

Difference: 500mAh (11.1% more)

💾

RAM

Random Access Memory for multitasking

Better

Redmi K90 Pro Max

12GB

F31 Pro+

8GB

Difference: 4GB (50.0% more)

⚖️

Weight

Total device weight

Better

Redmi K90 Pro Max

210g

F31 Pro+

175g

Difference: 35g (20.0% less)

💿

Storage

Internal storage capacity

Better

Redmi K90 Pro Max

256GB

F31 Pro+

128GB

Difference: 128GB (100.0% more)

📷

Main Camera

Main camera resolution

= Tie

Redmi K90 Pro Max

108MP

F31 Pro+

108MP

Difference: 0MP

💰

Price

Retail price in USD

= Tie

Redmi K90 Pro Max

799$

F31 Pro+

799$

Difference: 0$

📏

Height

Device height

Redmi K90 Pro Max

163.5mm

F31 Pro+

160mm

📐

Width

Device width

Redmi K90 Pro Max

75.2mm

F31 Pro+

74mm

📦

Thickness

Device thickness/depth

Better

Redmi K90 Pro Max

8.8mm

F31 Pro+

8mm

Difference: 0.8mm (10.0% less)

Redmi K90 Pro Max

F31 Pro+

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

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 Redmi K90 Pro Max View F31 Pro+ Screen Size Battery RAM Weight Storage

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