| Local Name | Galaxy A51 5G UW |
| Additional Information | Versions: SM-A516V (Verizon) |
| Technology | GSM / HSPA / LTE / 5G |
| 4G Bands | 2, 4, 5, 13, 66 |
| 3G Bands | HSDPA 850 / 900 / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G |
| Announced | 2020, August 14 |
| Status | Available. Released 2020, August 14 |
| Dimensions | 158.8 x 73.4 x 8.6 mm (6.25 x 2.89 x 0.34 in) |
| Weight | 188.8 g (6.67 oz) |
| Build | Glass front (Gorilla Glass 3), plastic back, aluminum frame |
| SIM | Pre-installed Nano-SIM |
| Display Type | Li-Po 4500 mAh, non-removable |
| Screen Size | 6.5 inches, 102.0 cm2 (~87.5% 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 | Qualcomm SM7250 Snapdragon 765G 5G (7 nm) |
| CPU | Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) |
| GPU | Adreno 620 |
| Card Slot | microSDXC (uses shared SIM slot) |
| Internal Memory | 128GB 6GB 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 Bricks Blue |
| SAR EU | 0.59 W/kg (head) 1.32 W/kg (body) |