| Nokia 6303i Classic | Siemens SX1 |
| Manufacture | Nokia | Siemens |
| Model | 6303i Classic | SX1 |
| Form factor | Block | Block |
| Weight | 96 gram | 116.00 |
| Dimensions (HxWxD) | 109 x 46 x 12 | 109.00 x 56.00 x 19.00 |
| Operating System | Series 40 | Other |
| Networks | 2G - 900/1800/1900 | 2G - 900/1800/1900 |
| HSCSD |  | NA |
| GPRS |  | |
| EDGE | | |
| UMTS | | |
| HSDPA | | |
| HSPA+ | | |
| WiMAX | | |
| LTE (4G light) | | |
| WLAN / Wi-Fi | | |
| Wi-Fi Hotspot | | |
| Wi-Fi Direct | | |
| SMS | | |
| MMS | | |
| | |
| 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, 4x digital zoom | 0.3 megapixel |
| 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 | 2.20 |
| Touchscreen | | |
| Colour display | | |
| Number of colours | 16000000 | 65000 |
| Display width | 240 | 176 |
| Display height | 320 | 220 |
| PPI | 181.82 | 128.06 |
| Second Display | NA | NA |
| CPU | NA | NA |
| GPU | NA | NA |
| Memory | 55 MB. Expandable up to 8 GB with microSD card | 24MB |
| Micro SIM | | |
| Dual SIM | | |
| MP3 | | |
| Ringtones / Music file format | MP3, WMA, WAV, NB-AMR, WB-AMR, MIDI, AAC, AAC+, eAAC+ | Polyphonic 40-tones |
| Java | | |
| Games | Yes. 8 | NA |
| FM Radio | | |
| Battery | 1050 mAh | Li-Polymer 1000 mAh |
| Standby time (h) | 515 | 200 |
| Talktime (m) | 480 | 240 |
| Wireless Charging | | |
| Browser | 2.0 XHTML, HTML. Nokia OSS web browser. Opera Mini | 2.0 |
| Calendar | | |
| Voicedialing | | |
| IP Code | NA | NA |
| Predictive text | | |
| RSS reader | | |
| Voicememo | | |
| PC Synchronization | | NA |
| SyncML | | NA |
| Website | Website | Website |