In a nutshell:
The HTC HD Mini is a compact smartphone. Yet despite its small size, it packs in a decent 3.2 inch touchscreen and all the power of a Windows smartphone - Outlook Mobile, Office Mobile, Internet Explorer Mobile and Opera Mobile, plus apps for facebook, twitter and youtube. Add in a 5 megapixel camera, GPS, Wi-Fi, HSPA, tons of memory and a big battery, and you'll be amazed at how powerful such a small device can be. Unfortunately, it seems poor value when compared to other phones.