on my FP3 I have no issues with Spotify. Which Fairphone OS and app version do you have? Does this only happen with mobile data or also when you are on a wi-fi network?
Have you already tried to uninstall and reinstall Spotify?
Are you 100% sure that your OS version is A.0134? There were some problems about FP3s that didn’t update although a newer version existed.
I.e, could you send a screenshot of your build number, in System → About Phone?
I don’t have any problem with Spotify on mine.
That a really weird thing and I don’t think it’s really Spotify’s fault.
If an app crashes, Android handles it, you might get and error dialog, etc… But the phone shouldn’t restart!
There’s 2 things I can think of:
-You can try to wipe the phone and make a fresh Fairphone OS install to see if it helps but that’s not really a solution…
-Do you use an SD card? Maybe your songs are saved there and there’s a electrical problem with the SD card connector that makes the whole phone shutdown and restart.
Good luck with that… Try reaching Fairphone support anyway because that’s really weird!