Redmi 13 vs Samsung Galaxy S21 Ultra
21.8Performance37.2
35.1Display56.3
34.9Camera72
48.1Battery46.4
33.3Features78.7
5 spec wins — Redmi 1312 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 33.5, pulling ahead mainly in features (+45) and camera (+37). Redmi 13 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Redmi 13
- 32% higher Wired charging: 33 W vs 25 W
- 10% lower weight: 205 g vs 228 g
- Has 3.5mm jack — the other doesn't
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger performance score: 37 vs 22
- Stronger display score: 56 vs 35
- Stronger camera score: 72 vs 35
- Stronger features score: 79 vs 33
- 250% higher Geekbench 6 (single): 1,430 vs 408
Display
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.79 ″ | 6.8 ″ |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 1080x2460 | 3200x1440 |
| Pixel density | 396 ppi | 515 ppi+30% |
| Refresh rate | 90 Hz | 120 Hz+33% |
| Peak brightness | 550 nits | 1,500 nits+173% |
Performance
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Helio G91 Ultra | Samsung Exynos 2100 |
| AnTuTu | — | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | — | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | — | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | — | 165,563Bottom 35% |
| AnTuTu 11 (UX) | — | 227,841Bottom 20% |
| Geekbench 6 (single) | 408Bottom 3% | 1,430+250%Top 46% |
| Geekbench 6 (multi) | 1,398Bottom 6% | 3,550+154%Bottom 50% |
| RAM (max) | 8 GB | 12 GB+50% |
| Storage options | 128/256GB | 128GB / 256GB / 512GB |
| Storage type | eMMC 5.1 | UFS 3.1 |
Camera
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 108 MP | 108 MP |
| Main aperture | f/1.75 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 1080p@30fps | 8K@24fps |
| Front camera | 13 MP | 40 MP+208% |
| OIS | No | Yes |
Battery
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 5,030 mAh+1% | 5,000 mAh |
| Wired charging | 33 W+32% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 205 g+10% | 228 g |
| Thickness | 8.3 mm+7% | 8.9 mm |
| IP rating | IP53 | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 14 (HyperOS) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | Redmi 13 | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | Yes | No |