OnePlus 13s vs Samsung Galaxy S21 Ultra
68.5Performance37.2
53.6Display56.3
54.7Camera72
69Battery46.4
78.7Features78.7
9 spec wins — OnePlus 13s6 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
OnePlus 13s wins this phone face-off, 63.9 to 53.9, pulling ahead mainly in performance (+31) and battery (+23). 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 13s
- Stronger performance score: 69 vs 37
- Stronger battery score: 69 vs 46
- 400% higher telephoto: 50 MP vs 10 MP
- 220% higher Wired charging: 80 W vs 25 W
- 138% higher Geekbench 6 (multi): 8,453 vs 3,550
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 55
- 400% higher Optical zoom: 10 x vs 2 x
- 116% higher Main camera: 108 MP vs 50 MP
- 25% higher Front camera: 40 MP vs 32 MP
- 12% higher Pixel density: 515 ppi vs 460 ppi
Display
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.32 ″ | 6.8 ″+8% |
| Panel type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 1216x2640 | 3200x1440 |
| Pixel density | 460 ppi | 515 ppi+12% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,600 nits+7% | 1,500 nits |
Performance
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Samsung Exynos 2100 |
| AnTuTu | — | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | — | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | — | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | — | 165,563Bottom 35% |
| AnTuTu 11 (UX) | — | 227,841Bottom 20% |
| Geekbench 6 (single) | 2,870+101%Top 18% | 1,430Top 46% |
| Geekbench 6 (multi) | 8,453+138%Top 17% | 3,550Bottom 50% |
| RAM (max) | 16 GB+33% | 12 GB |
| Storage options | 256/512GB | 128GB / 256GB / 512GB |
| Storage type | UFS 4.0 | UFS 3.1 |
Camera
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | 50 MP+400% | 10 MP |
| Optical zoom | 2 x | 10 x+400% |
| Max video | 4K@60fps | 8K@24fps |
| Front camera | 32 MP | 40 MP+25% |
| OIS | Yes | Yes |
Battery
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 5,850 mAh+17% | 5,000 mAh |
| Wired charging | 80 W+220% | 25 W |
| Wireless charging | 0 W | 15 W |
Design
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 185 g+19% | 228 g |
| Thickness | 8.2 mm+8% | 8.9 mm |
| IP rating | IP65 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | OnePlus 13s | 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 2.0 | USB-C 3.2 |
| eSIM | Yes | Yes |
Software
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 15 (OxygenOS 15) | Android 11 (One UI 3.1) |
| OS update pledge | 4 years | 4 years |
Audio
| Spec | OnePlus 13s | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
Related comparisons
OnePlus 13svs OnePlus Turbo 6X ProVSOnePlus 13svs realme 16 Pro 5GVSOnePlus 13svs Huawei Pura 90 ProVSOnePlus 13svs OnePlus 15RVSSamsung Galaxy S21 Ultravs realme P4 Power 5GVSSamsung Galaxy S21 Ultravs TECNO POVA Curve 2 5GVSSamsung Galaxy S21 Ultravs Motorola Edge 50 ProVSSamsung Galaxy S21 Ultravs iPhone 16eVS