| Manufacture | Nokia | Sony Ericsson |
| Model | 6303 Classic | Hazel J20 |
| Form factor | Block | Slider |
| Weight | 96 gram | 120.00 |
| Dimensions (HxWxD) | 109 x 46 x 12 | 103.00 x 50.00 x 16.00 |
| Operating System | Series 40 | Other |
| Networks | 2G - 900/1800/1900
| 2G - 850/900/1800/1900
3G - 900/2100 |
| HSCSD |  | |
| GPRS |  | |
| EDGE | | |
| UMTS | | |
| HSDPA | | |
| HSPA+ | | |
| WiMAX | | |
| LTE (4G light) | | |
| WLAN / Wi-Fi | | |
| Wi-Fi Hotspot | | |
| Wi-Fi Direct | | |
| SMS | | |
| MMS | | |
| Email | | |
| HDMI out | | |
| USB port | | |
| MHL | | |
| Bluetooth | | |
| Bluetooth version | NA | NA |
| DLNA | | |
| GPS | | |
| Glonass | | |
| ANT+ | | |
| IrDA | | |
| NFC | | |
| 3.5 mm audio connector | | |
| Camera | | |
| Camera resolution | 3.2 megapixel, 8x digital zoom, autofocus | 5 megapixels, 4x digital zoom, autofocus, smile detection |
| Image Stabilization | | |
| BSI sensor | | |
| Camera Flash/Light | | |
| Flash type | NA | NA |
| Video recording | | |
| Video capture resolution | NA | NA |
| Second Camera | NA | NA |
| Display size | 2.2 inches | 2.60 |
| Touchscreen | | |
| Colour display | | |
| Number of colours | 16700000 | 16777216 |
| Display width | 240 | 240 |
| Display height | 320 | 320 |
| PPI | 181.82 | 153.85 |
| Second Display | NA | NA |
| CPU | NA | NA |
| GPU | NA | NA |
| Memory | 32 MB. Expandable up to 4GB with microSD card | 280 MB. Expandable up to 16 GB with microSD card |
| Micro SIM | | |
| Dual SIM | | |
| MP3 | | |
| Ringtones / Music file format | Polyphonic, MP3, AAC | MP3, AAC |
| Java | | |
| Games | Bounce Tales, Sudoku, Brain Champion, Tower Bloxx | Yes |
| FM Radio | | |
| Battery | 1050 | NA |
| Standby time (h) | 450 | 430 |
| Talktime (m) | 420 | 600 |
| Wireless Charging | | |
| Browser | 2.0 XHTML, HTML. Opera Mi | 2.0 XHTML, HTML |
| Calendar | | |
| Voicedialing | | |
| IP Code | NA | NA |
| Predictive text | | |
| RSS reader | | |
| Voicememo | | |
| PC Synchronization | | |
| SyncML | | |
| Website | Website | Website |
