I was woken up not by the alarm button voices from the phone. My ip5 was dialing on it's own. The voice was from the answering machine for calling cabs. Could not end the call as the screen was in locked mode but I ended the call with the power button. Checked the dial history and found the clever phone has made several calls to my contacts! It was 5am in the morning! What the hell went wrong? I don't use Siri. Now, I have to explain why my phone made those morning calls.