Pull out the little drawer under your dashboard and its under that, and on the back of the drawer you will find spare fuses and fuse holder. Mine stopped working today and my son changed it out for me. Lighter now works. Mine is a 15amp fuse. Hope this helps.
An HTC EVO4 smartphone can be bought in most of the large cell phone retailers such as phones4u and carphone warehouse. It can also be bought online from Amazon from several sellers.