Redmi 9A vs Samsung Galaxy S21 Ultra
20Performance37.2
20Display56.3
20.5Camera72
38.8Battery46.4
20Features78.7
2 spec wins — Redmi 9A15 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 23.9, pulling ahead mainly in features (+59) and camera (+52). Redmi 9A still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Redmi 9A
- 15% lower weight: 194 g vs 228 g
- Has 3.5mm jack — the other doesn't
- Lower launch price: $99 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger performance score: 37 vs 20
- Stronger display score: 56 vs 20
- Stronger camera score: 72 vs 21
- Stronger battery score: 46 vs 39
- Stronger features score: 79 vs 20
Display
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.53 ″ | 6.8 ″+4% |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 1600x720 | 3200x1440 |
| Pixel density | 269 ppi | 515 ppi+91% |
| Refresh rate | 60 Hz | 120 Hz+100% |
| Peak brightness | — | 1,500 nits |
| AnTuTu 10 (CPU) | — | 263,424Top 88% |
| AnTuTu 10 (GPU) | — | 126,989Top 82% |
| AnTuTu 10 (Memory) | — | 165,563Top 72% |
| AnTuTu 10 (UX) | — | 227,841Top 82% |
Performance
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Helio G25 | Samsung Exynos 2100 |
| AnTuTu 10 | 100,000Top 100% | 783,817+684%Top 65% |
| Geekbench 6 (single) | — | 1,430Top 52% |
| Geekbench 6 (multi) | — | 3,550Top 56% |
| RAM (max) | 2 GB | 12 GB+500% |
| Storage options | 32GB | 128GB / 256GB / 512GB |
| Storage type | eMMC 5.1 | UFS 3.1 |
Camera
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 13 MP | 108 MP+731% |
| Main aperture | f/2.2 | f/1.8 |
| Ultra-wide | — | 12 MP |
| Telephoto | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 1080p@30fps | 8K@24fps |
| Front camera | 5 MP | 40 MP+700% |
| OIS | No | Yes |
Battery
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 5,000 mAh | 5,000 mAh |
| Wired charging | 10 W | 25 W+150% |
| Wireless charging | — | 15 W |
Design
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 194 g+15% | 228 g |
| Thickness | 9 mm | 8.9 mm+1% |
| IP rating | — | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 6E |
| Bluetooth | 5.0 | 5.2 |
| NFC | No | Yes |
| USB | Micro-USB | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 10 (MIUI 12) | Android 11 (One UI 3.1) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | Redmi 9A | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | Yes | No |