The Fairphone 2 has finally received an update to Android 7.1 Nougat, a two-year-old version of the mobile OS. Considering the Fairphone 2's age and the slow rollout of supported software, the handset may be entering its end-of-life.
https://www.notebookcheck.net/The-modular-Fairphone-2-gets-updated-to-Android-7-1-Nougat.361696.0.html