BenQ-Siemens EF51
Memory
| Internal | 20MB |
| Call records | 10 dialed, 10 received, 10 missed calls |
| Phonebook | Yes, Photo call |
| Card slot | miniSD |
Main Camera
| Video | No |
| Single | 1.3 MP |
Selfie camera
No |
Display
| Resolution | 120 x 128 pixels (~80 ppi density) |
| Size | 2.2 inches, 40 x 40 mm, 15.6 cm2 (~35.7% screen-to-body ratio) |
| Type | TFT, 256K colors |
Body
| SIM | Mini-SIM |
| Weight | 95 g (3.35 oz) |
| Dimensions | 89 x 49 x 18 mm (3.50 x 1.93 x 0.71 in) |
Battery
| Talk time | Up to 4 h |
| Stand-by | Up to 200 h |
| Type | Removable Li-Ion 870 mAh battery |
Sound
3D surround sound | |
| 3.5mm jack | No |
| Alert types | Vibration; Downloadable polyphonic, MP3 ringtones |
| Loudspeaker | No |
Features
WMA/MP3/AAC/AAC+ player Predictive text input Voice memo Stopwatch Organizer | |
| Java | Yes, MIDP 2.0 |
| Games | Yes + downloadable |
| Browser | WAP 2.0/xHTML |
| Messaging | SMS, MMS |
| Sensors |
Misc
| Colors | Flashy White, Black |
Comms
| USB | Proprietary |
| Radio | FM radio |
| GPS | No |
| Bluetooth | 1.2, A2DP |
| WLAN | No |
Launch
| Status | Discontinued |
| Announced | 2006, February |
Network
| EDGE | No |
| GPRS | Class 10 |
GSM 850 / 1800 / 1900 - US version | |
| 2G bands | GSM 900 / 1800 / 1900 |
| Technology |