[Android Central Question]

The evening of February 2, 2018, my phone all of a sudden started playing an audio ad. I wasn't using my phone and there were no apps open. It just started talking all of a sudden. I opened my phone, double checked that I didn't have anything open. There didn't seem to be a way to stop the ad. I just had to wait until it was finished talking or else turn off my phone. It happened a second time a few hours later, and it just happened a third time about 20 minutes ago. It seems to be the same ad every time for something called "Flaming Gorge." Each of the three times that it happened I wasn't using the phone. It was just sitting next to me while I did other things. There were no apps open any of the times. And it just played out until it finished. I'm honestly getting pretty freaked out at this point.