| Hardware and OS Samsung Galaxy M91 |
| Operating System: | Android v11 |
| Custom UI: | Samsung One UI |
| Processor: | Octa core (2.2 GHz, Dual core, Kryo 470 1.8 GHz, Hexa Core, Kryo 470) |
| Chipset: | Qualcomm Snapdragon 730 |
| Architecture: | 64 bit |
| Internal Memory: | 128 GB |
| External memory: | Yes, Up to 512 GB |
| RAM: | 8 GB |
| GPU: | Adreno 618 |
| Display Samsung Galaxy M91 |
| Type: | AMOLED |
| Size: | 6.7 inches (17.02 cm) |
| Screen format: | 20:9 |
| PPI /points per inch/: | 393 ppi |
| Touchscreen: | Yes, Capacitive Touchscreen, Multi-touch |
| Connectivity Samsung Galaxy M91 |
| 4G Bands: | TD-LTE 2300(band 40), FD-LTE 1800(band 3) |
| Network Support: | 4G, 3G, 2G |
| NFC: | Yes |
| SIM card: | SIM1: Nano, SIM2: Nano (Hybrid) |
| SIM Slot(s): | Dual SIM, GSM GSM |
| Bluetooth: | Yes, v5.1 |
| GPS: | Yes with A-GPS |
| USB Connectivity: | Mass storage device, USB charging |
| VoLTE: | Yes |
| Wi-Fi: | Yes, Wi-Fi 802.11, b/g/n |
| Camera Samsung Galaxy M91 |
| Main camera: | 48 MP, Primary Camera, 8 MP, Ultra-Wide Angle Camera, 5 MP, Depth Camera, |
| Camera Setup: | Triple |
| Autofocus: | Yes |
| Camera Features: | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Flash: | Yes, LED Flash |
| Image Resolution: | 8000 x 6000 Pixels |
| Selfie camera: | 16 MP, Primary Camera, |
| Camera Setup: | Single |
| Multimedia Samsung Galaxy M91 |
| Headphone jack: | 3.5 mm |
| Loudspeaker: | Yes |
| Battery Samsung Galaxy M91 |
| Capacity: | 4500 mAh |
| Type: | Li-ion |
| Removable: | No |
| Quick Charging: | Yes, Fast |
| USB Type-C: | Yes |
| Other features Samsung Galaxy M91 |
| Fingerprint Sensor: | Yes |
| Fingerprint Sensor Position: | On-screen |
| Fingerprint Sensor Type: | Optical |
| Other Sensors: | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope |
