| Local Name | Galaxy A51 5G |
| Additional Information | Versions: SM-A516B/DS (International), SM-A516U (USA), SM-A516F/DSN, SM-A516N (South Korea) |
| Technology | GSM / HSPA / LTE / 5G |
| 4G Bands | 1, 3, 4, 5, 7, 8, 12, 20, 28, 38, 40, 41 - SM-A516B/DS |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 - SM-A516B/DS | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G |
| Announced | 2020, April 08 |
| Status | Available. Released 2020, April 29 |
| Dimensions | 158.9 x 73.6 x 8.7 mm (6.26 x 2.90 x 0.34 in) |
| Weight | 187 g (6.60 oz) |
| Build | Glass front (Gorilla Glass 3), plastic back, aluminum frame |
| SIM | Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| Display Type | Li-Po 4500 mAh, non-removable |
| Screen Size | 6.5 inches, 102.0 cm2 (~87.2% screen-to-body ratio) |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~405 ppi density) |
| Protection | Corning Gorilla Glass 3 |
| OS | Android 10, One UI 2 |
| Chipset | Exynos 980 (8 nm) |
| CPU | Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55) |
| GPU | Mali-G76 MP5 |
| Card Slot | microSDXC (uses shared SIM slot) |
| Internal Memory | 128GB 6GB RAM, 128GB 8GB RAM | UFS 2.1 |
| Camera Features | HDR |
| Video | 4K@30fps, 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 |
| Radio | FM radio, RDS, recording |
| USB | USB Type-C 2.0, USB On-The-Go |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Features Summary | ANT+ |
| Colors | Prism Cube Black, Prism Cube White, Prism Cube Pink |
| SAR EU | 0.50 W/kg (head) 1.55 W/kg (body) |