Home/Battles/Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) vs Galaxy S21 FE

Lab Benchmark Battle

Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) vs Galaxy S21 FE

Direct side-by-side battle analyzing display brightness, chipset benchmark percentiles, multi-camera arrays, battery capacity, and charging speeds.

Smartphone Battle

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Asus · 2025

Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501)

Price on request

76.4/ 100

Overall

Exceptional

BeastScore

76.4

Benchmark

Performance95/100

Camera60/100

Battery92/100

Samsung · 2022

Galaxy S21 FE

$699

76.3/ 100

Overall

Exceptional

BeastScore

76.3

Benchmark

Performance72/100

Camera75/100

Battery78/100

Which Phone Should You Buy: Key Reasons & Hardware Advantages

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Reasons to buy Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501):

✓Larger 5,800 mAh battery capacity (+1,300 mAh more capacity)
✓6.78" display with 120Hz ProMotion refresh rate

Reasons to buy Galaxy S21 FE:

✓50g lighter chassis (177g) optimized for one-handed ergonomics
✓$9300 lower launch MSRP ($699 vs $9999)
✓12MP primary camera sensor with 4K/120fps video recording

How Do the Specifications Compare Side-by-Side?

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Specification	Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501)	Galaxy S21 FE
1. Display & Screen
Screen Type & Tech	AM-OLED display	Dynamic AMOLED 2X
Screen Size	6.78"	6.4"
Resolution & Density	1080x2400 (388 ppi)	2340x1080 (403 ppi)
Refresh Rate	60 Hz	120 Hz ProMotion
Brightness	N/A	1,200 nits peak
Screen Protection	Scratch-resistant glass	Scratch-resistant glass
2. Platform & Performance
Chipset / Processor	High performance SoC	High performance SoC
CPU Cores	Multi-core high performance	Multi-core high performance
GPU Graphics	Integrated Graphics	Integrated Graphics
Operating System	Android	Android 12
3. Memory & Storage
RAM Memory	16 GB	6 GB
Internal Storage	512GB	128GB / 256GB
Storage Speed	High-speed flash	High-speed flash
Card Slot	No	No
4. Main Camera Optics
Primary Camera	N/A	12 MP, f/1.8, OIS
Telephoto Zoom	None (Digital zoom only)	8 MP (3x optical zoom), f/2.4, OIS
Ultrawide Camera	N/A	12 MP, f/2.2
LiDAR / Depth	None	None
5. Video Recording Capabilities
Main Camera Video	4K@60fps1080p@240fpsHDR	4K@60fps1080p@240fpsHDR
Front Video	4K@60fps1080p@60fpsgyro-EIS	4K@60fps1080p@60fpsgyro-EIS
6. Selfie Camera
Selfie Lens	N/A	32 MP, f/2.2
7. Body & Dimensions
Dimensions	N/A	159.8 x 73.6 x 8.2 mm
Weight	227 g	177 g
Build Materials	Glass front, metal/glass frame	Glass front, metal/glass frame
SIM Type	Nano-SIM / eSIM support	Nano-SIM / eSIM support
Water Resistance	Not certified	IP68
8. Battery & Charging
Battery Capacity	5,800 mAh	4,500 mAh
Wired Fast Charging	N/A	25W wired fast charging
Wireless Charging	Not supported	15W wireless charging
Reverse Charging	Reverse wireless charging	Reverse wireless charging
9. Sound & Audio
Loudspeaker	Stereo speakers	Stereo speakers
3.5mm Headphone Jack	No	No
10. Connectivity & Comms
Wi-Fi Standard	Wi-Fi 7 / 6E tri-band	Wi-Fi 6
Bluetooth	Bluetooth 5.3+	5.0
USB Port & Speed	USB Type-C	USB-C 2.0
NFC	Yes	Yes (contactless payment)
11. Sensors & Security
Sensors	Biometric fingerprint/face, accelerometer, gyro, compass	Biometric fingerprint/face, accelerometer, gyro, compass
Satellite Features	Emergency SOS via satellite (select markets)	Emergency SOS via satellite (select markets)
12. Colors & Overview
Colors	Standard finishes	Standard finishes
Launch Price	Price on request	$699

Editorial Lab Verdict

Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) edges ahead with a BeastScore of 76.4/100

After comprehensive hardware benchmark comparisons, Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) ranks as the overall top pick in this matchup. Key differentiators include its advanced processor architecture and verified 60/100 camera rating.

When to buy Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501):

Higher overall BeastScore: 76.4 vs top rival 76.3 · Larger battery capacity: 5,800 mAh (+1,300 mAh more)

When to buy Galaxy S21 FE:

Significantly faster wired charging: 25W vs max 0W · Higher resolution main sensor: 12 MP vs max 0 MP

Quick Answers

Frequently Asked Questions: Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) vs Galaxy S21 FE

Which phone is better: Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) or Galaxy S21 FE?

Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) leads with an overall BeastScore of 76.4/100 compared to Galaxy S21 FE (76.3/100), driven by advantages in Higher overall BeastScore: 76.4 vs top rival 76.3 and Larger battery capacity: 5,800 mAh (+1,300 mAh more).

What are the primary battery and display differences between Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) and Galaxy S21 FE?

Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) is equipped with a 6.78-inch display and 5800 mAh battery, while Galaxy S21 FE features a 6.4-inch display and 4500 mAh battery.

How do the camera capabilities compare between Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) and Galaxy S21 FE?

In lab hardware evaluations, Asus ROG Phone 9 Pro 5G Dual SIM TD-LTE US 512GB AI2501 (Asus I2501) scores 60/100 in camera performance, while Galaxy S21 FE scores 75/100.

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