The Samsung Galaxy A40s features a 6.4-inch AMOLED Infinity-U display with a Resolution of 2,160 x 1,440 pixels. The display has a waterdrop notch on the top which houses a 16-megapixel selfie camera. Galaxy A40s also features a triple camera setup with a combination of 13-megapixel main sensor with an f/1.9 aperture, a 5-megapixel ultrawide lens with f/2.2 Aperture and a 5-megapixel depth sensor.
Under the hood, the phone is powered by Exynos 7904 octa-core Processor coupled with 6GB of RAM and 64GB of internal storage. It has a fingerprint sensor on the back and carries a 3.5mm Headphone jack as well. The phone is backed up by a 5,000mAh battery with support for 15W fast charging. It runs Android 9 Pie out of the box.
| Type | Full HD+, sAMOLED Infinity U display |
| Resolution | 2160 x 1440 pixels |
| Screen Size | 6.4 inches |
| Processor | Octa Core 1.8 GHz, Samsung Exynos 7 Octa 7904 |
| Operating System | Android 9.0, Pie |
| RAM | 6 GB |
| Internal Memory | 64 GB |
| Expandable | 512 GB, Micro SD card |
| Rear Camera | 13 MP, Triple Rear Camera - 13MP + 5MP + 5MP |
| Front Camera | 16 MP, with f/2.0 aperture |
| Image Stablizer | No |
| Flash | Yes, LED FLash |
| Video Recording | Yes, 1080p@30fps |
| Design | Bar |
| Capacity | 5000 mAh, 15W fast charging |
| Type | Non Removable |
| Radio | Yes |
| Media Player | Yes, MP3/WAV/eAAC+/FLAC player |
| Video Player | Yes, MP4/H.264 player |
| Network | 2G |
| GSM/CDMA | GSM |
| Bluetooth | 5.0, A2DP, LE |
| WiFi | Yes, Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Internet | EDGE |
| GPS | With A-GPS |
| USB | Type-C |
| HDMI | No |
| Headphone Connector | 3.5 mm |
| SIM | Dual, Dedicated Slot |
| NFC | Yes |
| DLNA | No |
| Sensors | |
| Built in Applications | Yes |
| Warrenty | 1 Year |
| Dustproof | No |
| Shockproof | No |
| Water Resistant | No |
| Keypad | Touchscreen, Multi-touch Capacitive |
| Water Proof | No |