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Redmi K40 vs Galaxy M31s
Detailed specifications comparison between the Xiaomi Redmi K40 and the Samsung Galaxy M31s.
| Release Date | March 4, 2021 | August 6, 2020 |
| Operating System | Android 11, MIUI 12, Android 11, MIUI 12 | Android 10, upgradable to Android 12, One UI 4.1 |
| Display Size | 6.67 inches | 6.5 inches |
| Display Type | Super AMOLED, 120Hz, HDR10+, 1300 nits (peak) | Super AMOLED |
| Resolution | 720 x 1600 pixels | 720 x 1600 pixels |
| Refresh Rate | 120Hz | 60Hz |
| Processor / Chipset | Qualcomm SM8250-AC Snapdragon 870 5G | Exynos 9611 |
| RAM | - | - |
| Internal Storage | - | - |
| Main Camera | 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF | 64 MP, f/1.8, PDAF |
| Selfie Camera | 20 MP, f/2.5, (wide) | 13 MP / 8 MP |
| Battery Capacity | 4520 mAh | 6000 mAh |
| Charging Speed | 33W wired, PD3.0, QC3, 100% in 52 min | 25W wired |
| 5G Support | ||
| NFC | ||
| 3.5mm Jack |
Key differences: Redmi K40 vs Galaxy M31s
- Galaxy M31s has the bigger battery (6,000 mAh vs 4,520 mAh on the Redmi K40).
- Redmi K40 has the faster wired charging (33W vs 25W on the Galaxy M31s).
- Redmi K40 has the higher refresh rate (120Hz vs 60Hz on the Galaxy M31s).
- Redmi K40 has the larger screen (6.67-inch vs 6.5-inch on the Galaxy M31s).
- Galaxy M31s has the lower reference price (270 USD vs 280 USD on the Redmi K40).
- Redmi K40 is the newer phone, released about 7 months later.
- Only the Redmi K40 supports 5G.
- Only the Galaxy M31s keeps a 3.5mm headphone jack.
Generated from manufacturer specifications. Prices are reference launch prices in USD and vary by market.