Hi @Uwe4711,
I have the same problem ever since Android14 update. It used to work fine for Androdi13, and now the toggle “Automatically select network” is always on, but the automatic selection doesn’t work. I always need to choose the network manually. I am not sure why @Martin_Anderseck doesn’t experience this, but I can assure you are not alone, see e.g. Automatic network selection !
Could you also write to Fairphone support? This will help us to get more visibility for this issue.