OnePlus 9 vs Samsung Galaxy S21 Ultra
38.6Performance37.2
46.6Display56.3
39.3Camera72
55.9Battery46.4
65.3Features78.7
7 spec wins — OnePlus 910 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 46.5, pulling ahead mainly in camera (+33) and features (+13). OnePlus 9 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the OnePlus 9
- Stronger battery score: 56 vs 46
- 317% higher Ultra-wide: 50 MP vs 12 MP
- 160% higher Wired charging: 65 W vs 25 W
- 33% higher AnTuTu 10: 1,040,324 vs 783,817
- 16% lower weight: 192 g vs 228 g
- Lower launch price: $729 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger display score: 56 vs 47
- Stronger camera score: 72 vs 39
- Stronger features score: 79 vs 65
- 150% higher Front camera: 40 MP vs 16 MP
- 125% higher Main camera: 108 MP vs 48 MP
Display
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.55 ″ | 6.8 ″+4% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 2400x1080 | 3200x1440 |
| Pixel density | 402 ppi | 515 ppi+28% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,100 nits | 1,500 nits+36% |
| 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 | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 888 | Samsung Exynos 2100 |
| AnTuTu 10 | 1,040,324+33%Top 46% | 783,817Top 65% |
| Geekbench 6 (single) | 1,450+1%Top 48% | 1,430Top 52% |
| Geekbench 6 (multi) | 3,650+3%Top 53% | 3,550Top 56% |
| RAM (max) | 8 GB | 12 GB+50% |
| Storage options | 128GB / 256GB | 128GB / 256GB / 512GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 48 MP | 108 MP+125% |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | 50 MP+317% | 12 MP |
| Telephoto | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 8K@30fps | 8K@24fps |
| Front camera | 16 MP | 40 MP+150% |
| OIS | No | Yes |
Battery
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 4,500 mAh | 5,000 mAh+11% |
| Wired charging | 65 W+160% | 25 W |
| Wireless charging | 15 W | 15 W |
Design
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 192 g+16% | 228 g |
| Thickness | 8.7 mm+2% | 8.9 mm |
| IP rating | — | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
| Bluetooth | 5.2 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 3.1 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 11 (OxygenOS 11) | Android 11 (One UI 3.1) |
| OS update pledge | 3 years | 4 years+33% |
Audio
| Spec | OnePlus 9 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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