Found Phone near SBB Baden, Baden, Switzerland

Found an iPhone in a clear case. The lock screen features a Scooby-Doo wallpaper with Shaggy, Scooby-Doo, and the Mystery Machine under a purple and blue aurora sky, displaying the date Sunday, 21 June and the time 17:58. A notification on the screen reads "System: SIM Locked". The phone has been turned into SBB Baden.