The only iPhone that I have ever had any home button issues with is my original from 2007, which was used as my phone for three years and an iPod for the last seven. The button has a dead zone that, when pushed from the upper right corner, it tends to fail. Everywhere else it's fine. Other than that, I haven't had any home button issues with an iPhone that I have owned (2G 2007-2010, 3GS 2010-2012, 5 2012-2016, SE 2016-present).