General 
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 

Size 
Dimensions 110.5 x 52.6 x 17 mm 
Weight 145 g 
Display Type TFT resistive touchscreen, 65K colors 
Size 800 x 480 pixels, 3.0 inches 
- Full QWERTY keyboard
- Optical trackpad 
Sound Alert types Vibration; Downloadable polyphonic, MP3 ringtones, composer 
Speakerphone Yes 
- 3.5 mm audio jack 
Memory Phonebook Practically unlimited entries and fields, Photocall 
Call records Practically unlimited 
Internal 256 MB RAM, 512 MB ROM 
Card slot microSD (TransFlash), buy memory 

Data 
GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps 
HSCSD No 
EDGE Yes 
3G HSDPA, 7.2 Mbps; HSUPA, 2 Mbps 
WLAN Wi-Fi 802.11b/g 
Bluetooth Yes, v2.0 with A2DP 
Infrared port No 
USB Yes, v2.0 miniUSB 
Camera Primary 3.15 MP, 2048x1536 pixels, autofocus, LED flash 
Features Touch focus 
Video Yes, VGA@30fps 
Secondary Videocall camera

Features 
OS Microsoft Windows Mobile 6.1 Professional 
CPU Qualcomm MSM 7200 528 MHz processor 
Messaging SMS (threaded view), MMS, Email, Push email, IM 
Browser WAP 2.0/HTML (IE), RSS feeds 
Radio Stereo FM radio with RDS 
Games Yes + downloadable 
Colors Solid Black, Steel Silver 
GPS Yes, with A-GPS support 
Java Yes, MIDP 2.0 
- MP3/AAC/MPEG4 player
- Pocket Office (Word, Excel, PowerPoint, OneNote, PDF viewer)
- Picture editor/blogging 
- Organizer
- T9
- Voice memo/dial 

Battery 
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)