ROG Phone 9 Pro vs Zenfone 12 Ultra

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

100% Objective Comparisons — Data sourced from official manufacturers

See our methodology

100%

Zenfone 12 Ultra is 0.0% taller

ROG Phone 9 Pro

163.8mm×76.8mm

Zenfone 12 Ultra

163.8mm×77mm

Scaled to real proportions

Specifications Comparison

ROG Phone 9 Pro

Asus

4 wins

Zenfone 12 Ultra

Asus

3 wins

📱

Screen Size

Diagonal screen measurement

Better

ROG Phone 9 Pro

6.78"

Zenfone 12 Ultra

6.7"

Difference: 0.08" (1.2% more)

🔋

Battery

Battery capacity in milliamp-hours

Better

ROG Phone 9 Pro

5,800mAh

Zenfone 12 Ultra

5,500mAh

Difference: 300mAh (5.5% more)

💾

RAM

Random Access Memory for multitasking

Better

ROG Phone 9 Pro

16GB

Zenfone 12 Ultra

12GB

Difference: 4GB (33.3% more)

⚖️

Weight

Total device weight

Better

ROG Phone 9 Pro

227g

Zenfone 12 Ultra

220g

Difference: 7g (3.2% less)

💿

Storage

Internal storage capacity

Better

ROG Phone 9 Pro

512GB

Zenfone 12 Ultra

256GB

Difference: 256GB (100.0% more)

📷

Main Camera

Main camera resolution

Better

ROG Phone 9 Pro

50MP

Zenfone 12 Ultra

64MP

Difference: 14MP (28.0% more)

💰

Price

Retail price in USD

Better

ROG Phone 9 Pro

999$

Zenfone 12 Ultra

799$

Difference: 200$ (25.0% less)

📏

Height

Device height

ROG Phone 9 Pro

163.8mm

Zenfone 12 Ultra

163.8mm

📐

Width

Device width

ROG Phone 9 Pro

76.8mm

Zenfone 12 Ultra

77mm

📦

Thickness

Device thickness/depth

= Tie

ROG Phone 9 Pro

8.9mm

Zenfone 12 Ultra

8.9mm

Difference: 0mm

ROG Phone 9 Pro

Zenfone 12 Ultra

Winner in category

Last updated: March 23, 2026

Source: gsmarena.com

Last updated: March 23, 2026

Source: gsmarena.com

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Verified Data

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Data refreshed when specs change

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SizeVS Editorial Team

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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 ROG Phone 9 Pro View Zenfone 12 Ultra Screen Size Battery RAM Weight Storage

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