Let's compare each phone and tablet in the specs table.
| Galaxy S21 5G | Galaxy S25 | |
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| Manufacturer | SAMSUNG | SAMSUNG |
| Release Date | ||
| Screen Size | 6.2 inch | 6.2 inch |
| Resolution | 1,080 x 2,400 | 1,080 x 2,340 |
| Display Details | Dynamic AMOLED 2X | |
| Max Refresh Rate | 120 Hz | |
| Max Brightness | 2600 nits | |
| Body Size | 71.2mm x 151.7mm x 7.9mm | 70.5mm x 146.9mm x 7.2mm |
| Weight | 171 g | 162 g |
| Processor | Qualcomm Snapdragon 888 2.8GHz×1+2.4GHz×3 + 1.8GHz×4 | Qualcomm Snapdragon 8 Elite for Galaxy |
| OS | Android 11 | Android 15 |
| Main camera 1 | 12-megapixel(f/1.8) | 50-megapixel |
| Main camera 1 details | 1/1.7 inch wide angle | wide angle |
| Main camera 2 | 12-megapixel(f/2.2) | 12-megapixel |
| Main camera 2 details | 1/2.5-inch Ultra wide angle | Ultra wide angle |
| Main camera 3 | 64-megapixel(f/2) | 10-megapixel |
| Main camera 3 details | 1/1.7-inch telephoto | x3 telephoto |
| Main camera 4 | ||
| Main camera 4 details | ||
| Main camera 5 | ||
| Main camera 5 details | ||
| Sub camera 1 | 10-megapixel(f/2.2) | 12-megapixel |
| Sub camera 1 details | 1/3.2-inch wide angle | wide angle |
| Sub camera 2 | ||
| Sub camera 2 details | ||
| Battery | 4,000 mAh | 4,000 mAh |
| Video playback time | 29 hours | |
| RAM(GB) | 8 G | 12 G |
| ROM(GB) | 256 G | 256/512 G |
| Antutu | 725,000 ver8(estimated) | 2,239,000 ver10 |
| Water resistance | IPX5/IPX8 | IPX5/IPX8 |
| Dust resistance | IP6X | IP6X |
| SIM | ||
| NFC | Felica |