Let's compare each phone and tablet in the specs table.
| Redmi Note 15 Pro 5G | Rakuten BIG s | |
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| Manufacturer | Xiaomi | Rakuten Mobile |
| Release Date | ||
| Screen Size | 6.83 inch | 6.4 inch |
| Resolution | 1,280 x 2,772 | 1,080 x 2,340 |
| Display Details | AMOLED | |
| Max Refresh Rate | 120 Hz | |
| Max Brightness | 3200 nits | |
| Glass | Corning Gorilla Glass Victus 2 | |
| Body Size | 78.09mm x 163.61mm x 7.96mm | 79mm x 160mm x 9mm |
| Weight | 200 g | 204 g |
| Processor | MediaTek Dimensity 7400 Ultra | Qualcomm Snapdragon 765G 5G Octa-core 2.4GHz + 2.2GHz + 1.8GHz |
| OS | Android 15 | Android 10 |
| Main camera 1 | 200-megapixel(f/1.7) | 48-megapixel |
| Main camera 1 details | 1/1.4”, OIS | |
| Main camera 2 | 8-megapixel(f/2.2) | 8-megapixel |
| Main camera 2 details | ultra-wide | ultra-wide-angle |
| Main camera 3 | 8-megapixel | |
| Main camera 3 details | Telephoto (2x optical) | |
| Main camera 4 | 2-megapixel | |
| Main camera 4 details | depth charge | |
| Main camera 5 | ||
| Main camera 5 details | ||
| Sub camera 1 | 20-megapixel(f/2.2) | 16-megapixel |
| Sub camera 1 details | 1/4" | |
| Sub camera 2 | ||
| Sub camera 2 details | ||
| Battery | 6,300 mAh | 3,900 mAh |
| Charge | 45W | |
| Video playback time | 27 hours | 15 hours |
| RAM(GB) | 8G | 6G |
| RAM details | LPDDR4X | |
| ROM(GB) | 256G/512G | 128G |
| ROM details | UFS2.2 | |
| Antutu | 918,000 ver11(estimated) | 310,000 ver8(estimated) |
| Water resistance | IPX8 | IPX7 |
| Dust resistance | IP6X | IP6X |
| SIM | Dual SIM（nano SIM + nano SIM, nano SIM + eSIM） | |
| NFC | Felica |