ASUS Zenfone 9 vs Samsung Galaxy A51
45.8Performance20
49.3Display30.8
42.6Camera34.7
39.8Battery29.4
60Features33.3
13 spec wins — ASUS Zenfone 94 spec wins — Samsung Galaxy A51
InnoReviews verdict
ASUS Zenfone 9 wins this phone face-off, 46.1 to 28.3, pulling ahead mainly in features (+27) and performance (+26). Samsung Galaxy A51 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the ASUS Zenfone 9
- Stronger performance score: 46 vs 20
- Stronger display score: 49 vs 31
- Stronger camera score: 43 vs 35
- Stronger battery score: 40 vs 29
- Stronger features score: 60 vs 33
Reasons to pick the Samsung Galaxy A51
- 167% higher Front camera: 32 MP vs 12 MP
- 50% higher OS update pledge: 3 years vs 2 years
- 13% lower thickness: 7.9 mm vs 9.1 mm
- 10% higher Screen size: 6.5 ″ vs 5.9 ″
- Lower launch price: $399 vs $699
Display
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Screen size | 5.9 ″ | 6.5 ″+10% |
| Panel type | AMOLED | Super AMOLED |
| Resolution | 2400x1080 | 2400x1080 |
| Pixel density | 445 ppi+10% | 405 ppi |
| Refresh rate | 120 Hz+100% | 60 Hz |
| Peak brightness | 1,100 nits | — |
Performance
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Chipset | Snapdragon 8+ Gen 1 | Samsung Exynos 9611 |
| AnTuTu 10 | 1,300,000+505%Top 31% | 215,000Top 98% |
| Geekbench 6 (single) | 1,800+414%Top 40% | 350Top 99% |
| Geekbench 6 (multi) | 4,600+268%Top 40% | 1,250Top 100% |
| RAM (max) | 8 GB+33% | 6 GB |
| Storage options | 128GB / 256GB | 64GB / 128GB |
| Storage type | UFS 3.1 | UFS 2.0 |
Camera
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Main camera | 50 MP+4% | 48 MP |
| Main aperture | f/1.9 | f/2.0 |
| Ultra-wide | 12 MP | 12 MP |
| Max video | 8K@24fps | 4K@30fps |
| Front camera | 12 MP | 32 MP+167% |
| OIS | Yes | No |
Battery
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Capacity | 4,300 mAh+8% | 4,000 mAh |
| Wired charging | 30 W+100% | 15 W |
Design
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Weight | 169 g+2% | 172 g |
| Thickness | 9.1 mm | 7.9 mm+13% |
| IP rating | IP68 | — |
| Frame material | Aluminum | Plastic |
Connectivity
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| 5G | Yes | No |
| Wi-Fi | Wi-Fi 6E | Wi-Fi 5 |
| Bluetooth | 5.2 | 5.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 2.0 |
| eSIM | No | No |
Software
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| OS at launch | Android 12 (ZenUI) | Android 10 (One UI 2) |
| OS update pledge | 2 years | 3 years+50% |
Audio
| Spec | ASUS Zenfone 9 | Samsung Galaxy A51 |
|---|---|---|
| Stereo speakers | Yes | No |
| 3.5mm jack | Yes | Yes |