| Local Name | OT 556 |
| Technology | GSM |
| 2G Bands | GSM 900 / 1800 / 1900 |
| GPRS | Class 10 |
| EDGE | No |
| Announced | 2004, 1Q |
| Status | Discontinued |
| Dimensions | 108 x 48 x 21 mm, 86 cc (4.25 x 1.89 x 0.83 in) |
| Weight | 93 g (3.28 oz) |
| SIM | Mini-SIM |
| Display Type | CSTN, 65K colors |
| Resolution | 128 x 160 pixels | Downloadable logos |
| Card Slot | No |
| Phone Book | 500 x 20 fields, Photo call |
| Call Records | 10 dialed, 10 received, 10 missed calls |
| Internal Memory | 2 MB |
| Primary Camera | VGA, 640 x 480 pixels |
| Video | No |
| Secondary Camera | No |
| Alert Types | Vibration; Downloadable polyphonic ringtones, composer |
| Loudspeaker | No |
| 3.5mm Jack | No |
| WLAN | No |
| Bluetooth | No |
| GPS | No |
| Infrared Port | Yes |
| Radio | No |
| Messaging | SMS, EMS, MMS |
| Browser | WAP 2.0/xHTML |
| Games | SpeedDevils and GylosTale + downloadable |
| Java | Yes |
| Features Summary | Video player, Predictive text input, SyncML, Organizer, Voice memo, Voice dial |
| Battery | Li-Ion 800 mAh battery |
| Stand By | Up to 270 h |
| Talk Time | Up to 6 h |