| Sony Ericsson R300i |
 | General |
| Technology | GSM |
| Size | 90 x 47.9 x 15.8 mm |
| Weight | 93 grams |
| Available colors | black-silver |
| Display |
| Display diagonal | 1.9” |
| Display resolution | 128 x 160 pixels |
| Display type | TFT |
| Number of colors | 65536 |
| Memory |
| Phonebook capacity | 1000 |
| SMS memory / max. MMS size | dynamic / 300KB |
| Internal memory | 5 MB |
| Memory expandability | not expandable |
| Data transfer |
| Frequency bands | 900/1800/1900 MHz |
| GPRS / EDGE | Class 10 (4+1/3+2) / none |
| UMTS / HSDPA | none / none |
| IrDA / Bluetooth | none / 2.0 |
| WiFi | none |
| USB | 2.0 |
| Push-to-talk / RSS | none / none |
| GPS receiver | none |
| Basic functions |
| Profiles | present |
| Vibra function | present |
| Built-in handsfree | present |
| Voice dialing / voice commands | none / none |
| Sound recorder | present |
| Alarm clock | present, also when turned off |
| Predictive text entry | T9 |
| Software |
| Platform | SE |
| WAP / HTML browser | present / xHTML |
| E-mail client | none |
| Java | present, MIDP 2.0 |
| Games | 2 |
| Currency converter | none |
| Extra software | TrackID |
| Multimedia |
| Main camera | 1.3 megapixels, fix focus |
| Secondary camera | none |
| Video recording | 176x144 pixels |
| Music player | none |
| Equalizer | none |
| FM radio | present - RDS, bass boosting, AM band |
| Battery |
| Main battery | 930 mAh |
| Standby time | 410 hours |
| Talk time | 9 hours |
| Other |
| stereo speakers |
