| Brand: | BenQ-Siemens |
| Model: | EF71 |
| Release Date: | 2006, May |
| Display | |
| Size: | 2.2 inches, 34 x 45 mm, 15.2 cm2 (~36.0% screen-to-body ratio) |
| Resolution: | 176 x 220 pixels (~128 ppi density) |
| Technology: | TFT, 256K colors |
| Camera | |
| Main Specs: | 2 MP |
| Main Video: | Yes |
| Battery | |
| Capacity: | Removable Li-Ion 750 mAh battery |
| Type: | Li-Ion |
| Memory | |
| Expandable: | microSD (dedicated slot) |
| Body | |
| Dimensions: | 90 x 47 x 18.5 mm (3.54 x 1.85 x 0.73 in) |
| Weight: | 100 g (3.53 oz) |
| Connectivity | |
| Wifi: | No |
| Bluetooth: | Yes |
| Nfc: | No |
| Usb: | Proprietary |
| Headphone Jack: | No |
| Network: | GSM |
| Colors: | Stellar Aluminum |