HTC has released its interim financial results (pdf) for the month of November and, as expected, it showed its first sequential slowdown in sales in two years. The unaudited results indicate that HTC recorded a 19.6 percent reduction in growth over the same period last year. The company foreshadowed the dip in its Q3 financial call last month, with the arrival of the iPhone 4S, particularly its appearance on the Sprint network, making an impact.