Let's compare each phone and tablet in the specs table.
| Galaxy S21 5G | Galaxy S21+ 5G | Galaxy S21 Ultra 5G | Zenfone 8 | Xperia 5 III | Galaxy S20 5G | |
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| Manufacturer | SAMSUNG | SAMSUNG | SAMSUNG | ASUS | Sony Mobile Communications | SAMSUNG |
| Release Date | ||||||
| Screen Size | 6.2 inch | 6.7 inch | 6.8 inch | 5.9 inch | 6.1 inch | 6.2 inch |
| Resolution | 1,080 x 2,400 | 1,080 x 2,400 | 1,440 x 3,200 | 1,080 x 2,400 | 1,080 x 2,520 | 1,440 x 3,200 |
| Display Details | AMOLED | OLED | ||||
| Max Refresh Rate | 120 Hz | 120 Hz | ||||
| Max Brightness | 1100 nits | |||||
| Body Size | 71.2mm x 151.7mm x 7.9mm | 76mm x 162mm x 7.8mm | 76mm x 165mm x 8.9mm | 68.5mm x 148mm x 8.9mm | 68mm x 157mm x 8.2mm | 69mm x 152mm x 9.2mm |
| Weight | 171 g | 200 g | 228 g | 169 g | 168 g | 163 g |
| Processor | Qualcomm Snapdragon 888 2.8GHz×1+2.4GHz×3 + 1.8GHz×4 | Qualcomm Snapdragon 888 2.8GHz×1+2.4GHz×3 + 1.8GHz×4 | Qualcomm Snapdragon 888 2.8GHz×1+2.4GHz×3 + 1.8GHz×4 | Qualcomm Snapdragon 888 octa-core | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 865 2.8GHz + 1.7GHz (Octa-core) |
| OS | Android 11 | Android 11 | Android 11 | Android 11 | Android 11 | Android 10 |
| Main camera 1 | 12-megapixel(f/1.8) | 12-megapixel(f/1.8) | 108-megapixel(f/1.8) | 64-megapixel(f/1.8) | 12-megapixel(f/1.7) | 12-megapixel(f/1.8) |
| Main camera 1 details | 1/1.7 inch wide angle | 1/1.7 inch wide angle | 1/1.3 inch wide angle | Sony IMX686 | Standard 24mm | 1/1.7 inch wide angle 79°. |
| Main camera 2 | 12-megapixel(f/2.2) | 12-megapixel(f/2.2) | 12-megapixel(f/2.2) | 12-megapixel(f/2.2) | 12-megapixel(f/2.3) | 12-megapixel(f/2.2) |
| Main camera 2 details | 1/2.5-inch Ultra wide angle | 1/2.5-inch Ultra wide angle | 1/2.5-inch Ultra wide angle | Sony IMX363 (ultra wide angle + 4cm macro) | Telephoto 70mm(f/2.3),105mm(f/2.8) | Ultra wide angle 120°. |
| Main camera 3 | 64-megapixel(f/2) | 64-megapixel(f/2) | 10-megapixel(f/2.4) | 12-megapixel(f/2.2) | 64-megapixel(f/2) | |
| Main camera 3 details | 1/1.7-inch telephoto | 1/1.7-inch telephoto | 1/3.2-inch, 3x telephoto | Ultra wide angle 16mm | 1/1.7-inch 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 | 10-megapixel(f/2.2) | 10-megapixel(f/2.2) | 40-megapixel(f/2.2) | 8-megapixel(f/2) | 10-megapixel(f/2.2) | |
| Sub camera 1 details | 1/3.2-inch wide angle | 1/3.2-inch wide angle | 1/2.8-inch wide angle | 1/3.2インチ広角 | ||
| Sub camera 2 | ||||||
| Sub camera 2 details | ||||||
| Battery | 4,000 mAh | 4,800 mAh | 5,000 mAh | 4,000 mAh | 4,500 mAh | 4,000 mAh |
| Video playback time | ||||||
| RAM(GB) | 8 G | 8 G | 12 G | 8 G | 8 G | 12 G |
| ROM(GB) | 256 G | 256 G | 256 G | 128 G | 128 G | 128 G |
| Antutu | 725,000 ver8(estimated) | 725,000 ver8(estimated) | 725,000 ver8(estimated) | 715,000 ver8(estimated) | 761,000 ver9(estimated) | 502,000 ver8 |
| Water resistance | IPX5/IPX8 | IPX5/IPX8 | IPX5/IPX8 | IPX5/IPX8 | IPX5/IPX8 | IPX5/IPX8 |
| Dust resistance | IP6X | IP6X | IP6X | IP6X | IP6X | IP6X |
| SIM | 2 nanoSIM | 2 nanoSIM | ||||
| NFC | Felica | Felica |