| Local Name | Galaxy 551 |
| Additional Information | Also known as Samsung I5510, Samsung Callisto |
| Technology | GSM / HSPA |
| 3G Bands | HSDPA 900 / 2100 | HSDPA 850 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 |
| Speed | HSPA 7.2/0.384 Mbps |
| GPRS | Class 10 |
| EDGE | Class 12 |
| Announced | 2010, October |
| Status | Available. Released 2010, Q4 |
| Dimensions | 111 x 55 x 15.2 mm (4.37 x 2.17 x 0.60 in) |
| Weight | 117 g (4.13 oz) |
| Keyboard | QWERTY |
| SIM | Mini-SIM |
| Display Type | TFT capacitive touchscreen, 16M colors |
| Screen Size | 3.2 inches (~47.7% screen-to-body ratio) |
| Resolution | 240 x 400 pixels (~146 ppi pixel density) | TouchWiz 3.0 UI |
| OS | Android OS, v2.2 (Froyo), upgradable to v2.3.6 (Gingerbread) |
| Chipset | Qualcomm MSM7227 Snapdragon |
| CPU | 600 MHz |
| GPU | Adreno 200 |
| Card Slot | microSD, up to 32 GB, 1 GB included |
| Internal Memory | 160 MB | DNSe sound enhancement |
| Primary Camera | 3.15 MP, 2048 x 1536 pixels, autofocus |
| Video | 320p@15fps |
| Secondary Camera | No |
| Alert Types | Vibration; MP3, WAV ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Bluetooth | v2.1, A2DP |
| GPS | Yes, with A-GPS |
| Radio | Stereo FM radio with RDS |
| USB | microUSB v2.0 |
| Sensors | Accelerometer, proximity, compass |
| Messaging | SMS(threaded view), MMS, Email, Push Mail, IM |
| Browser | HTML |
| Java | Yes, via Java MIDP emulator |
| Features Summary | MP4/WMV/H.263 player, MP3/WAV/eAAC+ player, Document viewer |
| Battery | Li-Ion 1200 mAh battery |
| Stand By | Up to 520 h (2G) / Up to 370 h (3G) |
| Talk Time | Up to 9 h (2G) / Up to 5 h (3G) |
| Colors | Black |
| SAR US | 0.18 W/kg (head) 0.90 W/kg (body) |
| SAR EU | 0.38 W/kg (head) |
