I finally managed to make the Rode Smartlav run on my Fairphone: After having contacted Fairphone, Rode and MediaMarkt and run tests with other phones, it was clear that the Rode mic doesn’t enter enough into the Fairphone (the tolerances are extremely small). The solution was to very (!) gently (and not deeply) cut several times with a sharp kitchen knive into the black plastic of the Rode mic, just to make the black plastic shrink a little bit when pushing it backwards with the flat part of the knive. It’s all about less than millimeters. And it’s working now, and it’s still working on other phones, too. Rode told me that they are now sharing my hack with customers. And thanks MediaMarkt: One of your shop assistents had the idea!