Airplane mode does not help I had mine in airplane mode last night and it droided me until I shut it off. My wife (deaf since birth) has a hearing service dog. Gemini. He alerts her to the sound of the special ring sound on the phone. The sound plays for text messages, and email and the alarm clock. Then Gemini alerts her. So, turning off the phone is a bit of a problem as he will not respond to sounds he is not trained for. I cannot just set the alarm for her on the bedroom clock. In airplane mode, it rules out some sort of signal sent to the phone and must be something internally scheduled.