OnePlus 15 vs Samsung Galaxy S21 Ultra
92.9Performance37.2
68Display56.3
66.5Camera72
94.7Battery46.4
78.7Features78.7
17 spec wins — OnePlus 155 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
OnePlus 15 wins this phone face-off, 81.6 to 53.9, pulling ahead mainly in performance (+56) and battery (+48). 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 OnePlus 15
- Stronger performance score: 93 vs 37
- Stronger display score: 68 vs 56
- Stronger battery score: 95 vs 46
- 957% higher AnTuTu 10 (GPU): 1,342,827 vs 126,989
- 400% higher telephoto: 50 MP vs 10 MP
- Lower launch price: $899 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 67
- 186% higher Optical zoom: 10 x vs 3.5 x
- 116% higher Main camera: 108 MP vs 50 MP
- 25% higher Front camera: 40 MP vs 32 MP
- 14% higher Pixel density: 515 ppi vs 450 ppi
Display
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.78 ″ | 6.8 ″ |
| Panel type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 2772x1272 | 3200x1440 |
| Pixel density | 450 ppi | 515 ppi+14% |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 1,800 nits+20% | 1,500 nits |
| AnTuTu 10 (CPU) | 1,084,061+312%Top 4% | 263,424Top 88% |
| AnTuTu 10 (GPU) | 1,342,827+957%Top 7% | 126,989Top 82% |
| AnTuTu 10 (Memory) | 425,901+157%Top 4% | 165,563Top 72% |
| AnTuTu 10 (UX) | 793,372+248%Top 4% | 227,841Top 82% |
Performance
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite Gen 5 | Samsung Exynos 2100 |
| AnTuTu 10 | 3,646,161+365%Top 1% | 783,817Top 65% |
| Geekbench 6 (single) | 3,850+169%Top 1% | 1,430Top 52% |
| Geekbench 6 (multi) | 11,900+235%Top 1% | 3,550Top 56% |
| RAM (max) | 16 GB+33% | 12 GB |
| Storage options | 256GB / 512GB / 1TB | 128GB / 256GB / 512GB |
| Storage type | UFS 4.1 | UFS 3.1 |
Camera
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | 50 MP+317% | 12 MP |
| Telephoto | 50 MP+400% | 10 MP |
| Optical zoom | 3.5 x | 10 x+186% |
| Max video | 8K@30fps | 8K@24fps |
| Front camera | 32 MP | 40 MP+25% |
| OIS | Yes | Yes |
Battery
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 7,300 mAh+46% | 5,000 mAh |
| Wired charging | 120 W+380% | 25 W |
| Wireless charging | 50 W+233% | 15 W |
Design
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 211 g+7% | 228 g |
| Thickness | 8.2 mm+8% | 8.9 mm |
| IP rating | IP69 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 6E |
| Bluetooth | 6.0 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 3.2 | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 16 (OxygenOS 16) | Android 11 (One UI 3.1) |
| OS update pledge | 4 years | 4 years |
Audio
| Spec | OnePlus 15 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |