O2 X4
Memory
| Call records | Yes |
| Phonebook | 500 entries, Photo call |
| Card slot | miniSD, 32 MB included |
Main Camera
| Video | Yes |
| Features | LED flash |
| Single | 1.3 MP |
Selfie camera
No |
Display
Second external 4096 colors display Downloadable pictures | |
| Resolution | 176 x 220 pixels |
| Size | |
| Type | TFT, 256K colors |
Body
| SIM | Mini-SIM |
| Weight | 116 g (4.09 oz) |
| Dimensions | 89.9 x 45.1 x 24 mm (3.54 x 1.78 x 0.94 in) |
Battery
| Talk time | Up to 3 h |
| Stand-by | Up to 180 h |
| Type | Removable Li-Ion battery |
Sound
| 3.5mm jack | No |
| Alert types | Vibration; Downloadable polyphonic, MP3 ringtones |
| Loudspeaker | No |
Features
MP3 player Predictive text input Organizer Stopwatch | |
| Java | Yes, MIDP 2.0 |
| Games | Yes + downloadable |
| Browser | WAP 2.0/xHTML |
| Messaging | SMS, MMS |
| Sensors |
Misc
| Colors |
Comms
| USB | Proprietary |
| Radio | No |
| Infrared port | Yes |
| GPS | No |
| Bluetooth | No |
| WLAN | No |
Launch
| Status | Discontinued |
| Announced | 2004, Q4 |
Network
| Speed | Yes, 384 kbps |
| 3G bands | UMTS 2100 |
| 2G bands | GSM 900 / 1800 |
| Technology |