| General | |
| Device Name | 5820 |
| Released OS | BlackBerry OS 3.6 |
| Current OS | BlackBerry OS 3.6 |
| Announced Date | March 3rd, 2002 |
| Released Date | March 3rd, 2002 |
| Colors | Black |
| Notes | First Java-Based BlackBerry First device to have a phone Device was released on AT&T |
| Size & Weight | |
| Height | 11.68 mm |
| Width | 7.87 mm |
| Depth | 1.78 mm |
| Weight | 133.2 grams |
| Display | |
| Screen Resolution | 160 x 160 |
| Aspect Ratio | 1:1 |
| Battery | |
| Capacity | 1300 mAh |
| Removable | No |
| Hardware | |
| Keyboard Type | QWERTY |
| Processor Cores | 1 |
| System Memory/RAM | 1 MB |
| Built-in Storage | 8 MB |
| Wireless Connectivity | |
| Network Bands | GPRS/GSM 900MHz / 1800MHz |
| External Features | |
| Audio Port | 2.5 mm |
| Navigation Device | Jog Wheel |