OPPO K15s vs Samsung Galaxy S21
21.8chipPerformance34.6
55Display49.1
29Camera40.8
71.3Battery36.9
60Features78.7
5 spec wins — OPPO K15s6 spec wins — Samsung Galaxy S21
InnoReviews verdict
This one is close to a dead heat: OPPO K15s scores 43.6 against 43.6 for Samsung Galaxy S21. Pick by the categories that matter to you — OPPO K15s edges ahead in battery and display, or by price.
Which would you pick?
Key differences
Reasons to pick the OPPO K15s
- Stronger display score: 55 vs 49
- Stronger battery score: 71 vs 37
- 317% higher Main camera: 50 MP vs 12 MP
- 100% higher capacity: 8,000 mAh vs 4,000 mAh
- 80% higher Wired charging: 45 W vs 25 W
Reasons to pick the Samsung Galaxy S21
- Stronger performance score: 35 vs 22
- Stronger camera score: 41 vs 29
- Stronger features score: 79 vs 60
- 25% higher Front camera: 10 MP vs 8 MP
- 17% lower weight: 171 g vs 205 g
Display
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Screen size | 6.57 ″+6% | 6.2 ″ |
| Panel type | AMOLED | AMOLED |
| Resolution | 2372x1080 | 2400x1080 |
| Pixel density | 397 ppi | 421 ppi+6% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,400 nits+8% | 1,300 nits |
| Screen-to-body | 92.8 % | — |
Performance
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Chipset | MediaTek Dimensity 6360 MAX | Samsung Exynos 2100 |
| AnTuTu | — | 759,668Bottom 10% |
| AnTuTu 11 (CPU) | — | 254,121Bottom 10% |
| AnTuTu 11 (GPU) | — | 134,803Bottom 21% |
| AnTuTu 11 (Memory) | — | 149,893Bottom 12% |
| AnTuTu 11 (UX) | — | 220,851Bottom 10% |
| Geekbench 6 (single) | — | 1,430Top 46% |
| Geekbench 6 (multi) | — | 3,550Bottom 50% |
| RAM (max) | 8 GB | 8 GB |
| Storage options | 128GB / 256GB | 128GB / 256GB |
| Storage type | UFS 2.2 | UFS 3.1 |
Camera
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Main camera | 50 MP+317% | 12 MP |
| Main aperture | f/1.9 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 64 MP |
| Max video | 1080p@60fps | 8K@24fps |
| Front camera | 8 MP | 10 MP+25% |
| OIS | No | Yes |
Battery
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Capacity | 8,000 mAh+100% | 4,000 mAh |
| Wired charging | 45 W+80% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Weight | 205 g | 171 g+17% |
| Thickness | 8.8 mm | 7.9 mm+10% |
| IP rating | IP66/IP68/IP69/IP69K | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 5 | 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 K15s | Samsung Galaxy S21 |
|---|---|---|
| OS at launch | Android 16 (ColorOS 16) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | OPPO K15s | Samsung Galaxy S21 |
|---|---|---|
| Stereo speakers | — | Yes |
| 3.5mm jack | No | No |