| Local Name | R640 Character |
| Additional Information | Also known as Samsung SCH-R640, Samsung Messager Touch II |
| Technology | CDMA / CDMA2000 |
| 3G Bands | CDMA2000 1x |
| 2G Bands | CDMA 800 / 1900 |
| Speed | Yes |
| GPRS | No |
| EDGE | No |
| Announced | 2011, July |
| Status | Available. Released 2011, July |
| Dimensions | 107 x 55 x 15 mm (4.21 x 2.17 x 0.59 in) |
| Weight | 120 g (4.23 oz) |
| Keyboard | QWERTY |
| SIM | Mini-SIM |
| Display Type | TFT touchscreen, 256K colors |
| Screen Size | 2.8 inches (~41.3% screen-to-body ratio) |
| Resolution | - | Samsung TouchWiz Lite UI |
| Card Slot | microSD, up to 32 GB |
| Phone Book | Yes, Photocall |
| Call Records | Yes |
| Primary Camera | 1.3 MP, 1280 x 1024 pixels |
| Secondary Camera | No |
| Alert Types | Vibration; MP3 ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | No |
| Bluetooth | v2.1, A2DP, EDR |
| GPS | No |
| Radio | No |
| USB | microUSB v2.0 |
| Messaging | SMS, Email |
| Browser | WAP 2.0/xHTML, HTML |
| Games | Yes |
| Java | No |
| Features Summary | SNS applications, MP4/H.263 player, MP3/AAC+ player, Organizer, Voice memo, Predictive text input |
| Battery | Li-Ion 1000 mAh battery |
| Stand By | Up to 288 h |
| Talk Time | Up to 5 h |
| Colors | Electric Blue |
| SAR US | 0.50 W/kg (head) 0.97 W/kg (body) |
