some people get the luck of the draw when it comes to things…i have had a few cheap lg 225’s come in with screens that went blank…all it was was a loose connection, not really a hardware fault. As to your jack…some phones use specific size jacks that may be a little smaller than others…again it’s an engineering fault. I’m just against verizon phones because of their custom interface…i hate it…phones have different UI’s for a reason