| General | |
| Manufacturer: | BlackBerry |
| Model: | Curve 8520 |
| Other names: | Gemini |
| Year: | 2011 |
| Operating system: | RIM BlackBerry OS 4.6, RIM BlackBerry OS 5.0 |
| Capacity battery (MAh): | 1150 |
| Measurements | |
| Dimensions (mm): (width x height x thickness) |
60 x 109 x 13.9 |
| Weight (g): | 106 |
| Processor | |
| Processor Type: | Freescale MXC275-30 |
| Clock Frequency (MHz): | 512 |
| Memory | |
| Random access memory (RAM) (MB): | 128 |
| Read-only memory (ROM) (MB): | 256 |
| Communications | |
| Phone: | GSM 1800, GSM 1900, GSM 850, GSM 900 |
| Bluetooth: | 2.0 |
| Wi-Fi: | 802.11b,g |
| Other: | CSD, EDGE, GPRS |
| Multimedia | |
| Screen Size: | 2.5 |
| Screen Resolution (px): | 240 x 320 |
| Screen type: | TFT |
| Rear camera (Mp): | 2 |
| Speaker: | mono |
| Output of earphones: | 3.5 |
| Other: | Light sensor |
| Management and input | |
| Buttons: | QWERTY-keyboard, touchpad |
| Extension | |
| Memory Cards: | microSD, microSDHC |
| Connectors: | microUSB |
| Additionally |