POCO X4 GT vs Samsung Galaxy S21 Ultra
37.2Performance37.2
73.6Display56.3
32.3Camera72
59.1Battery46.4
60Features78.7
7 spec wins — POCO X4 GT10 spec wins — Samsung Galaxy S21 Ultra
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 50.2, pulling ahead mainly in camera (+40) and features (+19). POCO X4 GT still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the POCO X4 GT
- Stronger display score: 74 vs 56
- Stronger battery score: 59 vs 46
- 168% higher Wired charging: 67 W vs 25 W
- 34% higher AnTuTu 10: 1,050,000 vs 783,817
- 20% higher Refresh rate: 144 Hz vs 120 Hz
- Lower launch price: $379 vs $1,199
Reasons to pick the Samsung Galaxy S21 Ultra
- Stronger camera score: 72 vs 32
- Stronger features score: 79 vs 60
- 150% higher Front camera: 40 MP vs 16 MP
- 100% higher OS update pledge: 4 years vs 2 years
- 69% higher Main camera: 108 MP vs 64 MP
Display
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Screen size | 6.6 ″ | 6.8 ″+3% |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 2460x1080 | 3200x1440 |
| Pixel density | 407 ppi | 515 ppi+27% |
| Refresh rate | 144 Hz+20% | 120 Hz |
| 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 | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 8100 | Samsung Exynos 2100 |
| AnTuTu 10 | 1,050,000+34%Top 45% | 783,817Top 65% |
| Geekbench 6 (single) | 1,180Top 59% | 1,430+21%Top 52% |
| Geekbench 6 (multi) | 3,800+7%Top 52% | 3,550Top 56% |
| RAM (max) | 8 GB | 12 GB+50% |
| Storage options | 128GB / 256GB | 128GB / 256GB / 512GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Main camera | 64 MP | 108 MP+69% |
| Main aperture | f/1.9 | f/1.8 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Telephoto | — | 10 MP |
| Optical zoom | — | 10 x |
| Max video | 4K@30fps | 8K@24fps |
| Front camera | 16 MP | 40 MP+150% |
| OIS | No | Yes |
Battery
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Capacity | 5,080 mAh+2% | 5,000 mAh |
| Wired charging | 67 W+168% | 25 W |
| Wireless charging | — | 15 W |
Design
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Weight | 200 g+12% | 228 g |
| Thickness | 8.9 mm | 8.9 mm |
| IP rating | — | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
| Bluetooth | 5.3 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| OS at launch | Android 12 (MIUI 13) | Android 11 (One UI 3.1) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | POCO X4 GT | Samsung Galaxy S21 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | Yes | No |