HTC Desire is a series of Android smartphones designed and manufactured by HTC. All products in the Desire series were designed to be affordable, touchscreen-based and slate-sized, and run the Android mobile operating system with the HTC Sense graphical user interface except for the HTC Desire 616, HTC Desire 516. HTC Desire 310 and HTC Desire 210, all of which feature a mixed user interface of HTC Sense and the Android Open Source Project.