So my phone is doing some wierd stuff after I take it out of airplane mode. I am out of the USA right now and in order to shut odd my data usage and calls I keep it in airplane mode unless I am around a wifi spot. My phone might be on airplane mode for 3-9 hours at a time. When I take it out of airplane mode and let it sit for a bit after some wifi use I notice that it will start making calls on its own. I don't know what numer it is calling but it sounds like an operator recording. I am in St. Kitts right now.