| Local Name | Asha 303 |
| Technology | GSM / HSPA |
| 3G Bands | HSDPA 850 / 900 / 1700 / 1900 / 2100 |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 |
| Speed | HSPA 10.2/2 Mbps |
| GPRS | Class 33 |
| EDGE | Class 32 |
| Announced | 2011, October |
| Status | Available. Released 2011, December |
| Dimensions | 116.5 x 55.7 x 13.9 mm, 72 cc (4.59 x 2.19 x 0.55 in) |
| Weight | 99 g (3.49 oz) |
| Keyboard | QWERTY |
| SIM | Mini-SIM |
| Display Type | TFT capacitive touchscreen, 256K colors |
| Screen Size | 2.6 inches (~32.3% screen-to-body ratio) |
| Resolution | 320 x 240 pixels (~154 ppi pixel density) |
| CPU | 1 GHz |
| Card Slot | microSD, up to 32 GB |
| Phone Book | Yes, Photocall |
| Call Records | Yes |
| Internal Memory | 170 MB (100 MB user available), 256 MB ROM, 128 MB RAM |
| Primary Camera | 3.2 MP, 2048 x 1536 pixels, fixed focus |
| Camera Features | Face detection |
| Video | 480p@15fps |
| Secondary Camera | No |
| Alert Types | Vibration, Polyphonic(64), WAV, MP3 ringtones |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| WLAN | Wi-Fi 802.11 b/g/n |
| Bluetooth | v2.1, A2DP, EDR |
| GPS | No |
| Radio | Stereo FM radio with RDS |
| USB | microUSB v2.0, USB Host |
| Messaging | SMS(threaded view), MMS, Email, Push Email, IM |
| Browser | WAP 2.0/xHTML, HTML, Adobe Flash Lite |
| Games | Yes + downloadable |
| Java | Yes, MIDP 2.1 |
| Features Summary | SNS integration, MP4/H.264/WMV player, MP3/WAV/WMA/AAC player, Organizer, Voice memo, Predictive text input |
| Battery | Li-Ion 1300 mAh battery (BP-3L) |
| Stand By | Up to 720 h (2G) / Up to 840 h (3G) |
| Talk Time | Up to 8 h 10 min (2G) / Up to 7 h 10 min (3G) |
| Music Play | Up to 47 h |
| Colors | Red, Graphite, Silver White, Aqua, Green, Purple |
| SAR US | 1.16 W/kg (head) 1.10 W/kg (body) |
| SAR EU | 0.79 W/kg (head) |
