I'm thinking of getting a fairphone in the future. I like that they are modular and last a while. Are they easily customizable to where I can flash a different ROM? Is the default configuration private?
The default Android on them is pretty standard including Google Play services, so it is not great in regards to privacy (but could be worse, like an Apple device or so).
But for most of their models you can find good alternative Android roms or even mobile Linux distributions like PostmarketOS.