I found several posts concerning wifi issues, but none of them looks like it already covers the problem I am facing.
On some days or certain circumstances the wifi connection drops continuously after 10 minutes. E.g. when starting using Spotify and turning the phone off, it will work and play the music without problems for exactly 10 minutes. After that, the wifi will be switched off and the mobile connection will be used. A slow/bad mobile connection will lead to a skipping playback, which made me discover this issue. When reactivating the phone the wifi will be reconnected immediately and after a while the skipping will stop.
I did not investigate this in full detail, so I don’t have any clues why it sometimes works and sometimes not. But when it occurs it is reproduceable for an unspecified time frame.
The wifi setting for standby behaviour is set to “always” and the phone is in a place with a good connection to the router.
Is there anyone else encountering these issue or is someone able to reproduce it?