- (Kazor.com) – HTC HD 7 is a smart phone running on Windows Phone 7 operating system that has too many things to be discussed about either in the relation to the hardware and software for your convenience while utilization. What Do You Feel When You Hold It? As you might have always observed that HTC HD 7 has a large display screen of 4.3 inches, whereas it weighs only 162 grams that is giving...