Yes, this isn't a Problem at all. Just during the time my phone is switched off and in fly-mode the problems occur… I can't imagine why!? Problem still occures... anybody, who can help me? Just for better understanding: When Jolla-Phone is switched on and not in fly mode messages will arrive on my phone. When it is switched off or in fly-mode, messages of iPhone-user don't come through. Update: One of my Friends (iPhone-user) can't write me at all via whatsapp. Maybe they (iPhone-Users) have to change somthings in settings!?