OPPO K15 vs Samsung Galaxy S21
46.7Performance34.4
53.6Display49.1
58.6Camera40.8
79.8Battery36.9
86.7Features78.7
8 spec wins — OPPO K154 spec wins — Samsung Galaxy S21
InnoReviews verdict
OPPO K15 wins this phone face-off, 61.1 to 43.6, pulling ahead mainly in battery (+43) and camera (+18). Samsung Galaxy S21 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the OPPO K15
- Stronger performance score: 47 vs 34
- Stronger display score: 54 vs 49
- Stronger camera score: 59 vs 41
- Stronger battery score: 80 vs 37
- Stronger features score: 87 vs 79
Reasons to pick the Samsung Galaxy S21
- 17% lower weight: 171 g vs 205 g
- Has eSIM — the other doesn't
Display
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Screen size | 6.59 ″+6% | 6.2 ″ |
| Panel type | AMOLED | AMOLED |
| Resolution | 2760x1256 | 2400x1080 |
| Pixel density | 460 ppi+9% | 421 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,200 nits | 1,300 nits+8% |
| Screen-to-body | 88.9 % | — |
Performance
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Chipset | Dimensity 7360 Super | Samsung Exynos 2100 |
| AnTuTu | — | 746,547Bottom 18% |
| AnTuTu 11 (CPU) | — | 252,025Bottom 14% |
| AnTuTu 11 (GPU) | — | 127,819Bottom 35% |
| AnTuTu 11 (Memory) | — | 144,909Bottom 16% |
| AnTuTu 11 (UX) | — | 221,794Bottom 18% |
| Geekbench 6 (single) | — | 1,430Top 46% |
| Geekbench 6 (multi) | — | 3,550Bottom 50% |
| RAM (max) | 12 GB+50% | 8 GB |
| Storage options | 256GB | 128GB / 256GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Main camera | 50 MP+317% | 12 MP |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | 50 MP+317% | 12 MP |
| Telephoto | — | 64 MP |
| Max video | 4K@30fps | 8K@24fps |
| Front camera | 50 MP+400% | 10 MP |
| OIS | Yes | Yes |
Battery
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Capacity | 8,000 mAh+100% | 4,000 mAh |
| Wired charging | 80 W+220% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Weight | 205 g | 171 g+17% |
| Thickness | 8.3 mm | 7.9 mm+5% |
| IP rating | IP68/IP69 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6 |
| Bluetooth | 5.4 | 5.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| OS at launch | Android 16 (ColorOS 16) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | OPPO K15 | Samsung Galaxy S21 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |