Let's compare each phone and tablet in the specs table.
| Galaxy A21 | Pixel 3a | |
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| Manufacturer | SAMSUNG | |
| Release Date | ||
| Screen Size | 5.8 inch | 5.6 inch |
| Resolution | 720 x 1,560 | 1,080 x 2,220 |
| Display Details | OLED | |
| Max Refresh Rate | ||
| Max Brightness | ||
| Glass | ||
| Body Size | 71mm x 150mm x 8.4mm | 70.1mm x 151.3mm x 8.2mm |
| Weight | 159 g | 147 g |
| Processor | Samsung Exynos 7884B 1.6GHz x 2 + 1.3GHz x 6 | Qualcomm Snapdragon 670 2.0 GHz + 1.7 GHz, 64-bit octa-core |
| OS | Android 10 | Android 9 |
| Main camera 1 | 13-megapixel(f/1.9) | 12-megapixel(f/1.8) |
| Main camera 1 details | Pixel size 1.4μm | |
| Main camera 2 | ||
| Main camera 2 details | ||
| Main camera 3 | ||
| Main camera 3 details | ||
| Main camera 4 | ||
| Main camera 4 details | ||
| Main camera 5 | ||
| Main camera 5 details | ||
| Sub camera 1 | 5-megapixel(f/2) | 8-megapixel(f/2) |
| Sub camera 1 details | 画素サイズ1.12μm | |
| Sub camera 2 | ||
| Sub camera 2 details | ||
| Battery | 3,600 mAh | 3,000 mAh |
| Charge | ||
| Video playback time | ||
| RAM(GB) | 3G | 4G |
| RAM details | ||
| ROM(GB) | 64G | 64G |
| ROM details | ||
| Antutu | 91,000 ver7 | 153,000 ver7 |
| Water resistance | IPX5/IPX8 | IPX2 |
| Dust resistance | IP6X | IP5X |
| SIM | nanoSIM | |
| NFC | Felica |