| Local Name | T746 Impact |
| Additional Information | Also known as Samsung T749 Highlight for T-Mobile |
| Technology | GSM / HSPA |
| 3G Bands | HSDPA 850 / 1900 | HSDPA 1700 / 2100 - for T-Mobile |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 |
| Speed | HSPA |
| GPRS | Class 10 |
| EDGE | Class 10 |
| Announced | 2009, June |
| Status | Available. Released 2009, July |
| Dimensions | 108 x 54 x 13.7 mm (4.25 x 2.13 x 0.54 in) |
| Weight | 105 g (3.70 oz) |
| SIM | Mini-SIM |
| Display Type | TFT touchscreen, 16M colors |
| Screen Size | 3.0 inches (~43.9% screen-to-body ratio) |
| Resolution | 240 x 400 pixels (~155 ppi pixel density) |
| Card Slot | microSD, up to 16 GB |
| Phone Book | 2000 entries, Photocall |
| Call Records | Yes |
| Internal Memory | 60 MB |
| Primary Camera | 3.15 MP, 2048 x 1536 pixels |
| Video | Yes |
| Secondary Camera | No |
| Alert Types | Vibration; Downloadable polyphonic, MP3, WAV ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| WLAN | No |
| Bluetooth | v2.0, A2DP |
| GPS | No |
| Radio | No |
| USB | v2.0 |
| Sensors | Accelerometer |
| Messaging | SMS, MMS, Email, IM |
| Browser | WAP 2.0/xHTML, HTML |
| Games | Yes + downloadable |
| Java | Yes, MIDP 2.0 |
| Features Summary | MP3/WMA/eAAC+ player, H.264/MP4 player, Organizer, Predictive text input |
| Battery | Li-Ion 1200 mAh battery |
| Stand By | Up to 450 h |
| Talk Time | Up to 6 h 30 min |
| Colors | Fire, Ice |
| SAR US | 1.13 W/kg (head) |
