Redmi A4 5G vs Samsung Galaxy S21
20Performance34.4
44.1Display49.1
29Camera40.8
40.3Battery36.9
36Features78.7
4 spec wins — Redmi A4 5G9 spec wins — Samsung Galaxy S21
InnoReviews verdict
Samsung Galaxy S21 wins this phone face-off, 43.6 to 32.3, pulling ahead mainly in features (+43) and performance (+14). Redmi A4 5G still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Redmi A4 5G
- Stronger battery score: 40 vs 37
- 317% higher Main camera: 50 MP vs 12 MP
- 29% higher capacity: 5,160 mAh vs 4,000 mAh
- 11% higher Screen size: 6.88 ″ vs 6.2 ″
- Has 3.5mm jack — the other doesn't
Reasons to pick the Samsung Galaxy S21
- Stronger performance score: 34 vs 20
- Stronger display score: 49 vs 44
- Stronger camera score: 41 vs 29
- Stronger features score: 79 vs 36
- 117% higher Peak brightness: 1,300 nits vs 600 nits
Display
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| Screen size | 6.88 ″+11% | 6.2 ″ |
| Panel type | IPS LCD | AMOLED |
| Resolution | 720x1640 | 2400x1080 |
| Pixel density | 260 ppi | 421 ppi+62% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 600 nits | 1,300 nits+117% |
| Screen-to-body | 90 % | — |
Performance
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| Chipset | Snapdragon 4s Gen 2 | 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) | 4 GB | 8 GB+100% |
| Storage options | 64/128GB | 128GB / 256GB |
| Storage type | UFS 2.2 | UFS 3.1 |
Camera
| Spec | Redmi A4 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 | 5 MP | 10 MP+100% |
| OIS | — | Yes |
Battery
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| Capacity | 5,160 mAh+29% | 4,000 mAh |
| Wired charging | 18 W | 25 W+39% |
| Wireless charging | — | 15 W |
Design
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| Weight | 212 g | 171 g+19% |
| Thickness | 8.2 mm | 7.9 mm+4% |
| IP rating | IP52 | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6 |
| Bluetooth | 5.0 | 5.0 |
| NFC | — | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | — | Yes |
Software
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| OS at launch | Android 14 (HyperOS) | Android 11 (One UI 3.1) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | Redmi A4 5G | Samsung Galaxy S21 |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | Yes | No |