Let's compare each phone and tablet in the specs table.
| POCO F9 Ultra | Galaxy S21 Ultra 5G | |
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| Manufacturer | Xiaomi | SAMSUNG |
| Release Date | ||
| Screen Size | 6.85 inch | 6.8 inch |
| Resolution | 1,200 x 2,608 | 1,440 x 3,200 |
| Display Details | AMOLED | |
| Max Refresh Rate | 185 Hz | |
| Max Brightness | 4500 nits | |
| Glass | Corning® Gorilla® Glass 7i | |
| Body Size | 77.94mm x 163.49mm x 8.74mm | 76mm x 165mm x 8.9mm |
| Weight | 235 g | 228 g |
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 888 2.8GHz×1+2.4GHz×3 + 1.8GHz×4 |
| OS | Android 16 | Android 11 |
| Main camera 1 | 200-megapixel(f/1.68) | 108-megapixel(f/1.8) |
| Main camera 1 details | Light Fusion 950, 1/1.31", OIS | 1/1.3 inch wide angle |
| Main camera 2 | 50-megapixel(f/2.4) | 12-megapixel(f/2.2) |
| Main camera 2 details | ultra-wide | 1/2.5-inch Ultra wide angle |
| Main camera 3 | 50-megapixel(f/3) | 10-megapixel(f/2.4) |
| Main camera 3 details | optical zoom 5x, 120mm, OIS | 1/3.2-inch, 3x telephoto |
| Main camera 4 | 10-megapixel(f/4.9) | |
| Main camera 4 details | 1/3.2-inch, 10x telephoto | |
| Main camera 5 | ||
| Main camera 5 details | ||
| Sub camera 1 | 32-megapixel | 40-megapixel(f/2.2) |
| Sub camera 1 details | 1/2.8-inch wide angle | |
| Sub camera 2 | ||
| Sub camera 2 details | ||
| Battery | 8,050 mAh | 5,000 mAh |
| Charge | 100W HyperCharge, 22.5W wireless HyperCharge, Up to 27W reverse charging | |
| Video playback time | ||
| RAM(GB) | 12G/16G | 12G |
| RAM details | UFS 4.1 | |
| ROM(GB) | 256G/512G | 256G |
| ROM details | LPDDR5X_9600Mbps | |
| Antutu | 3,732,000 ver11 | 725,000 ver8(estimated) |
| Water resistance | IPX8 | IPX5/IPX8 |
| Dust resistance | IP6X | IP6X |
| SIM | Dual SIM (nano SIM + nano SIM or nano SIM + eSIM, eSIM + eSIM) | |
| NFC | NFC-enabled |