Asus ROG Phone 9 Pro vs Samsung Galaxy S21 Ultra
85.5Performance37.2
65.2Display56.3
56.1Camera72
77Battery46.4
68Features78.7
12 spec wins — Asus ROG Phone 9 Pro6 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Asus ROG Phone 9 Pro wins this phone face-off, 72.1 to 53.9, pulling ahead mainly in performance (+48) and battery (+31). Samsung Galaxy S21 Ultra still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Asus ROG Phone 9 Pro
- Stronger performance score: 86 vs 37
- Stronger display score: 65 vs 56
- Stronger battery score: 77 vs 46
- 264% higher AnTuTu 10: 2,850,000 vs 783,817
- 220% higher telephoto: 32 MP vs 10 MP
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 56
- Stronger features score: 79 vs 68
- 233% higher Optical zoom: 10 x vs 3 x
- 116% higher Main camera: 108 MP vs 50 MP
- 100% higher OS update pledge: 4 years vs 2 years
Display
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.78 ″ | 6.8 ″ |
| Panel type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 1080x2400 | 3200x1440 |
| Pixel density | 388 ppi | 515 ppi+33% |
| Refresh rate | 185 Hz+54% | 120 Hz |
| Peak brightness | 2,500 nits+67% | 1,500 nits |
| Screen-to-body | 84.9 % | — |
| AnTuTu 10 (CPU) | — | 263,424Top 88% |
| AnTuTu 10 (GPU) | — | 126,989Top 82% |
| AnTuTu 10 (Memory) | — | 165,563Top 72% |
| AnTuTu 10 (UX) | — | 227,841Top 82% |
Performance
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Samsung Exynos 2100 |
| AnTuTu 10 | 2,850,000+264%Top 2% | 783,817Top 65% |
| Geekbench 6 (single) | 3,120+118%Top 6% | 1,430Top 52% |
| Geekbench 6 (multi) | 9,900+179%Top 2% | 3,550Top 56% |
| RAM (max) | 24 GB+100% | 12 GB |
| Storage options | 512GB/1TB | 128GB / 256GB / 512GB |
| Storage type | UFS 4.0 | UFS 3.1 |
Camera
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.9 | f/1.8 |
| Ultra-wide | 13 MP+8% | 12 MP |
| Telephoto | 32 MP+220% | 10 MP |
| Optical zoom | 3 x | 10 x+233% |
| Max video | 8K@24fps | 8K@24fps |
| Front camera | 32 MP | 40 MP+25% |
| OIS | Yes | Yes |
Battery
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 5,800 mAh+16% | 5,000 mAh |
| Wired charging | 65 W+160% | 25 W |
| Wireless charging | 15 W | 15 W |
| Active use endurance | 14 h | — |
Design
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 227 g | 228 g |
| Thickness | 8.9 mm | 8.9 mm |
| IP rating | IP68 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 3.2 | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 15 (ROG UI) | Android 11 (One UI 3.1) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | Asus ROG Phone 9 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | Yes | No |
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