| Local Name | Galaxy A31 |
| Additional Information | Versions: SM-A315F/DS (International); SM-A315G/DS (Asia, Australia) |
| Technology | GSM / HSPA / LTE |
| 4G Bands | 1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 38, 40, 41, 66 - SM-A315G |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 - SM-A315F | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - SM-A315G |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A |
| Announced | 2020, March 24 |
| Status | Available. Released 2020, April 27 |
| Dimensions | 159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
| Weight | 185 g (6.53 oz) |
| SIM | Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
| Display Type | Super AMOLED capacitive touchscreen, 16M colors |
| Screen Size | 6.4 inches, 98.9 cm2 (~84.9% screen-to-body ratio) |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~411 ppi density) |
| OS | Android 10, One UI 2.0 |
| Chipset | Mediatek MT6768 Helio P65 (12nm) |
| CPU | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) |
| GPU | Mali-G52 MC2 |
| Card Slot | microSDXC (dedicated slot) |
| Internal Memory | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM | eMMC 5.1 |
| Camera Features | LED flash, panorama, HDR |
| Video | 1080p@30fps |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.0, A2DP, LE |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| NFC | Yes (market/region dependent) |
| Radio | FM radio, RDS, recording |
| USB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery | Non-removable Li-Po 5000 mAh battery |
| Colors | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
| SAR EU | 0.49 W/kg (head) 1.68 W/kg (body) |
