REDMI Note 15 vs Samsung Galaxy S21
21.8Performance34.4
65.5Display49.1
36.4Camera40.8
57.3Battery36.9
60Features78.7
6 spec wins — REDMI Note 159 spec wins — Samsung Galaxy S21
InnoReviews verdict
This one is close to a dead heat: REDMI Note 15 scores 44.4 against 43.6 for Samsung Galaxy S21. Pick by the categories that matter to you — REDMI Note 15 edges ahead in battery and display, or by price.
Which would you pick?
Key differences
Reasons to pick the REDMI Note 15
- Stronger display score: 66 vs 49
- Stronger battery score: 57 vs 37
- 800% higher Main camera: 108 MP vs 12 MP
- 146% higher Peak brightness: 3,200 nits vs 1,300 nits
- 100% higher Front camera: 20 MP vs 10 MP
Reasons to pick the Samsung Galaxy S21
- Stronger performance score: 34 vs 22
- Stronger camera score: 41 vs 36
- Stronger features score: 79 vs 60
- 94% higher Geekbench 6 (single): 1,430 vs 738
- 78% higher Geekbench 6 (multi): 3,550 vs 1,990
Display
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Screen size | 6.77 ″+9% | 6.2 ″ |
| Panel type | AMOLED | AMOLED |
| Resolution | 1080x2392 | 2400x1080 |
| Pixel density | 388 ppi | 421 ppi+9% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,200 nits+146% | 1,300 nits |
| Screen-to-body | 93.7 % | — |
Performance
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Chipset | MediaTek Helio G100 Ultra | 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) | 738Bottom 16% | 1,430+94%Top 46% |
| Geekbench 6 (multi) | 1,990Bottom 17% | 3,550+78%Bottom 50% |
| RAM (max) | 8 GB | 8 GB |
| Storage options | 128/256/512GB | 128GB / 256GB |
| Storage type | UFS 2.2 | UFS 3.1 |
Camera
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Main camera | 108 MP+800% | 12 MP |
| Main aperture | f/1.7 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 64 MP |
| Max video | 1080p@60fps | 8K@24fps |
| Front camera | 20 MP+100% | 10 MP |
| OIS | No | Yes |
Battery
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Capacity | 6,000 mAh+50% | 4,000 mAh |
| Wired charging | 33 W+32% | 25 W |
| Wireless charging | 0 W | 15 W |
Design
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Weight | 184 g | 171 g+7% |
| Thickness | 7.9 mm | 7.9 mm+1% |
| IP rating | IP64 | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6 |
| Bluetooth | 5.3 | 5.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| OS at launch | Android 15 (HyperOS 2) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | REDMI Note 15 | Samsung Galaxy S21 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |