| Local Name | Galaxy A21 |
| Additional Information | Versions: SM-A215U (USA); SM-A215U1 (USA Unlocked) |
| Technology | GSM / CDMA / HSPA / EVDO / LTE |
| 4G Bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 - USA |
| 3G Bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA | CDMA2000 1xEV-DO |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) | CDMA 800 / 1900 |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Announced | 2020, April 08 |
| Status | Available. Released 2020, June 26 |
| Dimensions | 167.8 x 76.7 x 8.1 mm (6.61 x 3.02 x 0.32 in) |
| Weight | 193 g (6.81 oz) |
| Build | Glass front, plastic back, plastic frame |
| SIM | Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
| Display Type | Li-Po 4000 mAh, non-removable |
| Screen Size | 6.5 inches, 102.0 cm2 (~79.3% screen-to-body ratio) |
| Resolution | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| OS | Android 10, One UI 2.0 |
| Chipset | Mediatek MT6765 Helio P35 (12nm) |
| CPU | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) |
| GPU | PowerVR GE8320 |
| Card Slot | microSDXC (dedicated slot) |
| Internal Memory | 32GB 3GB 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, BDS |
| NFC | Yes (market/region dependent) |
| Radio | FM radio |
| USB | USB Type-C 2.0 |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| Colors | Black |
