| Local Name | Galaxy A03s |
| Technology | GSM / HSPA / LTE |
| 4G Bands | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 | 2, 4, 5, 7, 12, 13, 14, 25, 26, 41, 66, 71 - SM-A037U |
| 3G Bands | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - SM-A037U |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Announced | 2021, August 18 |
| Status | Available. Released 2021, August 18 |
| Dimensions | 164.2 x 75.9 x 9.1 mm (6.46 x 2.99 x 0.36 in) |
| Weight | 196 g (6.91 oz) |
| Build | Glass front, plastic frame, plastic back |
| SIM | Dual SIM (Nano-SIM, dual stand-by) |
| Display Type | Li-Po 5000 mAh, non-removable |
| Screen Size | 6.5 inches, 102.0 cm2 (~81.8% screen-to-body ratio) |
| Resolution | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| OS | Android 11, upgradable to Android 12, One UI 4.1 Core |
| 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 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 4GB RAM | eMMC 5.1 |
| Camera Features | LED flash |
| Video | 1080p@30fps |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP |
| NFC | Yes (market/region dependent) |
| Radio | No |
| USB | USB Type-C 2.0 |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity |
| Colors | Black, Blue, White |
| SAR EU | 0.36 W/kg (head) 1.09 W/kg (body) |
