Same thing happened to me a few weeks ago when I was at SeaTac. My phone kept telling me I was in Paris and it was 8am, 72 degrees. I was definitely in Seattle. I tried everything from settings to a battery pull. Nothing worked so I gave up and shut off my phone, since I was going to have to anyway once I was on the plane. When I landed in Atlanta several hours later and turned my phone back on, it seemed to work just fine. It's truly puzzling.
