Redmi 15 5G vs Samsung Galaxy S21
26Performance34.4
70.3Display49.1
29Camera40.8
66.7Battery36.9
44Features78.7
5 spec wins — Redmi 15 5G11 spec wins — Samsung Galaxy S21
InnoReviews verdict
Redmi 15 5G wins this phone face-off, 45.4 to 43.6, pulling ahead mainly in battery (+30) and display (+21). 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 Redmi 15 5G
- Stronger display score: 70 vs 49
- Stronger battery score: 67 vs 37
- 317% higher Main camera: 50 MP vs 12 MP
- 75% higher capacity: 7,000 mAh vs 4,000 mAh
- 32% higher Wired charging: 33 W vs 25 W
- Lower launch price: $199 vs $799
Reasons to pick the Samsung Galaxy S21
- Stronger performance score: 34 vs 26
- Stronger camera score: 41 vs 29
- Stronger features score: 79 vs 44
- 100% higher OS update pledge: 4 years vs 2 years
- 73% higher Geekbench 6 (multi): 3,550 vs 2,050
Display
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Screen size | 6.9 ″+11% | 6.2 ″ |
| Panel type | IPS LCD | AMOLED |
| Resolution | 2340x1080 | 2400x1080 |
| Pixel density | 374 ppi | 421 ppi+13% |
| Refresh rate | 144 Hz+20% | 120 Hz |
| Peak brightness | — | 1,300 nits |
| AnTuTu 10 (CPU) | — | 252,025Top 94% |
| AnTuTu 10 (GPU) | — | 127,819Top 79% |
| AnTuTu 10 (Memory) | — | 144,909Top 91% |
| AnTuTu 10 (UX) | — | 221,794Top 88% |
Performance
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Chipset | Snapdragon 6s Gen 3 | Samsung Exynos 2100 |
| AnTuTu 10 | 460,000Top 80% | 746,547+62%Top 66% |
| Geekbench 6 (single) | 920Top 76% | 1,430+55%Top 52% |
| Geekbench 6 (multi) | 2,050Top 78% | 3,550+73%Top 56% |
| RAM (max) | 8 GB | 8 GB |
| Storage options | 128GB / 256GB | 128GB / 256GB |
| Storage type | UFS 2.2 | UFS 3.1 |
Camera
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Main camera | 50 MP+317% | 12 MP |
| Main aperture | f/1.8 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 64 MP |
| Max video | 1080p@30fps | 8K@24fps |
| Front camera | 8 MP | 10 MP+25% |
| OIS | No | Yes |
Battery
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Capacity | 7,000 mAh+75% | 4,000 mAh |
| Wired charging | 33 W+32% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Weight | 217 g | 171 g+21% |
| Thickness | 8.4 mm | 7.9 mm+6% |
| IP rating | IP64 | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6 |
| Bluetooth | — | 5.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| OS at launch | Android 15 (HyperOS 2) | Android 11 (One UI 3.1) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | Redmi 15 5G | Samsung Galaxy S21 |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | — | No |