REDMI K80 Pro vs Samsung Galaxy S21 Ultra
82.7Performance37.2
68.5Display56.3
58.2Camera72
85.3Battery46.4
86.7Features78.7
15 spec wins — REDMI K80 Pro5 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
REDMI K80 Pro wins this phone face-off, 75.9 to 53.9, pulling ahead mainly in performance (+46) and battery (+39). Samsung Galaxy S21 Ultra still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the REDMI K80 Pro
- Stronger performance score: 83 vs 37
- Stronger display score: 69 vs 56
- Stronger battery score: 85 vs 46
- Stronger features score: 87 vs 79
- 741% higher AnTuTu 11 (GPU): 1,067,368 vs 126,989
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 58
- 300% higher Optical zoom: 10 x vs 2.5 x
- 116% higher Main camera: 108 MP vs 50 MP
- 100% higher Front camera: 40 MP vs 20 MP
- Has eSIM — the other doesn't
Display
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.67 ″ | 6.8 ″+2% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1440x3200 | 3200x1440 |
| Pixel density | 526 ppi+2% | 515 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,200 nits+113% | 1,500 nits |
Performance
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Samsung Exynos 2100 |
| AnTuTu 11 | 2,904,176+271%Top 18% | 783,817Bottom 22% |
| AnTuTu 11 (CPU) | 807,372+206%Top 21% | 263,424Bottom 17% |
| AnTuTu 11 (GPU) | 1,067,368+741%Top 18% | 126,989Bottom 33% |
| AnTuTu 11 (Memory) | 434,407+162%Top 8% | 165,563Bottom 35% |
| AnTuTu 11 (UX) | 595,029+161%Top 19% | 227,841Bottom 20% |
| Geekbench 6 (single) | — | 1,430Top 46% |
| Geekbench 6 (multi) | — | 3,550Bottom 50% |
| RAM (max) | 16 GB+33% | 12 GB |
| Storage options | 256/512GB/1TB | 128GB / 256GB / 512GB |
| Storage type | UFS 4.0 | UFS 3.1 |
Camera
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 50 MP | 108 MP+116% |
| Main aperture | f/1.6 | f/1.8 |
| Ultra-wide | 32 MP+167% | 12 MP |
| Telephoto | 50 MP+400% | 10 MP |
| Optical zoom | 2.5 x | 10 x+300% |
| Max video | 8K@24fps | 8K@24fps |
| Front camera | 20 MP | 40 MP+100% |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 6,000 mAh+20% | 5,000 mAh |
| Wired charging | 120 W+380% | 25 W |
| Wireless charging | 50 W+233% | 15 W |
Design
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 212 g+7% | 228 g |
| Thickness | 8.4 mm+6% | 8.9 mm |
| IP rating | IP68 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 6E |
| Bluetooth | 5.4 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 15 (HyperOS 2) | Android 11 (One UI 3.1) |
| OS update pledge | — | 4 years |
Audio
| Spec | REDMI K80 Pro | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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