| 2G Network | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 900 / 1900 / 2100 |
| | HSDPA 850 / 1900 / 2100 - XPERIA X1a |
| Announced | 2008, February |
| Status | Available. Released 2008, October |
| Dimensions | 110.5 x 52.6 x 17 mm |
| Weight | 145 g |
| Keyboard | QWERTY |
| Type | TFT resistive touchscreen, 65K colors |
| Size | 480 x 800 pixels, 3.0 inches (~311 ppi pixel density) |
| | - Optical trackpad |
| Alert types | Vibration; Downloadable polyphonic, MP3 ringtones, composer |
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Card slot | microSD |
| Internal | 256 MB RAM, 512 MB ROM |
| GPRS | Class 10 (4+1/3+2 slots), 32 - 48 kbps |
| EDGE | Yes |
| Speed | HSDPA, 7.2 Mbps; HSUPA, 2 Mbps |
| WLAN | Wi-Fi 802.11b/g |
| Bluetooth | Yes, v2.0 with A2DP |
| USB | Yes, v2.0 miniUSB |
| Primary | 3.15 MP, 2048x1536 pixels, autofocus, LED flash |
| Features | Touch focus |
| Video | Yes, VGA@30fps |
| Secondary | Videocall camera |
| OS | Microsoft Windows Mobile 6.1 Professional |
| Chipset | Qualcomm MSM7200 |
| CPU | 528 MHz ARM 11 |
| Messaging | SMS (threaded view), MMS, Email, Push email, IM |
| Browser | WAP 2.0/HTML (IE), RSS feeds |
| Radio | Stereo FM radio with RDS |
| GPS | Yes, with A-GPS support |
| Java | Yes, MIDP 2.0 |
| Colors | Solid Black, Steel Silver |
| | - MP3/AAC/MP4 player
- Pocket Office (Word, Excel, PowerPoint, OneNote, PDF viewer)
- Picture editor/blogging
- Organizer
- Predictive text input
- Voice memo/dial |
| | Standard battery, Li-Po 1500 mAh (BST-41) |
| Stand-by | Up to 833 h (2G) / Up to 640 h (3G) |
| Talk time | Up to 10 h (2G) / Up to 6 h (3G) |
| SAR EU | 0.57 W/kg (head) |
| Price group | |
