| Local Name | J300 |
| Technology | GSM |
| 2G Bands | GSM 900 / 1800 - J300i, J300c | GSM 850 / 1900 - J300a |
| GPRS | Yes |
| EDGE | No |
| Announced | 2005, 1Q |
| Status | Discontinued |
| Dimensions | 99.1 x 42.6 x 18.2 mm (3.90 x 1.68 x 0.72 in) |
| Weight | 78 g (2.75 oz) |
| SIM | Mini-SIM |
| Display Type | STN, 65K colors |
| Screen Size | 1.5 inches, 27 x 27 mm (~17.2% screen-to-body ratio) |
| Resolution | 128 x 128 pixels (~121 ppi pixel density) | Wallpapers, screensavers |
| Card Slot | No |
| Phone Book | Yes, Photo call |
| Call Records | 10 dialed, 10 received, 10 missed calls |
| Internal Memory | 12 MB |
| Alert Types | Vibration; Downloadable polyphonic, MP3, AAC ringtones, composer |
| Loudspeaker | Yes |
| 3.5mm Jack | No |
| WLAN | No |
| Bluetooth | No |
| GPS | No |
| Radio | No |
| USB | Yes |
| Messaging | SMS, MMS, Email, Instant Messaging |
| Browser | WAP 2.0/xHTML |
| Games | Rayman 3+ downloadable |
| Java | Yes, MIDP 2.0 |
| Features Summary | Media player, Predictive text input, Organizer, Voice memo, SyncML, Exchangeable covers |
| Battery | Li-Ion 750 mAh battery (BST-36) |
| Stand By | Up to 300 h |
| Talk Time | Up to 7 h |
| Colors | Plucky Pink, Sensitive White, Midnight Grey |
| SAR US | 1.12 W/kg (head) 0.97 W/kg (body) |
| SAR EU | 1.02 W/kg (head) |
