Replacing your mobile? Check out these 2 HTCs:
HTC Desire - Running Google Android
HTC HD2 - Running Windows Mobile
Personally, I picked the 1st one, but in case you are still debating, check out this great comparison:
http://yasirimran.wordpress.com/2010/07/06/htc-hd2-vs-htc-desire-comparison/
I will describe comparison points below. 
 - Multi-touch input method - Accelerometer sensor for UI auto-rotate - Proximity sensor for auto turn-off - Pick-to-mute - Accelerometer sensor for UI auto-rotate - Proximity sensor for auto turn-off - Optical trackpad 3G HSDPA, 7.2 Mbps; HSUPA, 2 Mbps WLAN Wi-Fi 802.11 b/g, Wi-Fi router Bluetooth v2.1 with A2DP USB microUSB 3G HSDPA, 7.2 Mbps; HSUPA, 2 Mbps WLAN Wi-Fi 802.11 b/g Bluetooth v2.1 with A2DP USB microUSB v2.0
 
Comparison 
HTC HD2 
HTC Desire 
 
Network 
Both HTC HD2 and Desire capable of working on most common network frequencies for 2G & 3G networks 
 
Released Date 
HTC HD2 Released on october 2009 
HTC Desire is newest, released on February 2010 
 
Dimension 
HTC HD2 is little taller than Desire with a 67 mm 
HTC Desire is 9 mm thicker than HD2 and 1.5 mm less wider than HD2 
 
Weight 
HTC HD2 weighs 157g 
HTC Desire weighs 135g 
 
Operating System 
Microsoft Windows Mobile 6.5 Professional 
Android OS, v2.1 (Eclair) 
 
Browser 
WAP 2.0/xHTML, HTML 
HTML only 
 
CPU 
Both HD2 and Desire has same Qualcomm Snapdragon QSD8250 1 GHz processor 
 
GPS 
GPS is offcourse is necessary for every smartphone these days. So do HD2 and Desire 
 
Display 
HD2 comes with Biggest 4.3 inch TFT capacitive touch screen with 65k colors, WVGA resolution 400 x 800 pixels. 
Additional screen features are:-
Sense UI
HTC Desire comes with 3.7 inch AMOLED capacitive touch screen with 16 Million colors, WVGA resolution 400 x 800 pixels. 
- HTC Sense UI- Multi-touch input method
 
Headphone jack 
3.5 mm audio jack 
3.5 mm audio jack 
 
Memory 
HTC HD2 comes with 448 MB RAM and 512 MB ROM 
Desire has higher 576 MB RAM and 512 MB ROM 
 
Expansion Slot 
Both devices has microSD support upto 32 GB 
 
Data 
Below is the detail. 
GPRS Class 12 (4+1/3+2/2+3/1+4 slots), 32 – 48 kbpsEDGE Class 12
Below is the detail. 
GPRS Class 10 (4+1/3+2 slots), 32 – 48 kbpsEDGEClass 10, 236.8 kbps
 
Camera Features 
HTC HD2 comes with 5 megapixel camera, 2592 x 1944 pixels resolution Additionally supporting autofocus. Equipped with dual LED flash and Geo-tagging feature. Video recording at 30 frames per second. 
HTC Desire also comes with 5 megapixel camera, 2592 x 1944 pixels resolution Additionally supporting autofocus. Equipped with LED flash and Geo-tagging, smile detection features. From video recording point of view it is looser Just at 15 frames per second 
 
Battery 
HTC HD2 has little low power battery as compared to Desire. Li-Ion 1230mAh Battery that gives you Up to 6 h 20 min talktime and 490 hours of Standby time. 
HTC Desire didn’t jump too high from HD2 but little more battery power of Li-Ion 1400 mAh that can manage up to 6 h 40 min talktime and up to 340 h standby. 
 
Additional Features 
Both devices equipped with Digital compass, Facebook and Twitter integration, Google Search, Google Maps, Youtube App and Flickr App 




