They asked everyone to please turn off our phones because the wifi was interfering. I'm pretty sure they said "wifi" and not "bluetooth." I thought that was st

They asked everyone to please turn off our phones because the wifi was interfering. I'm pretty sure they said "wifi" and not "bluetooth." I thought that was strange because you'd expect a keyboard/remote to be bluetooth. Theory as to what went wrong: they pushed out an update to the GoogleIO conference Android app earlier this morning. I'd already upgraded before the keynote started; some of the people I was there with got it & some didn't. The app now uses wifi for inside geolocation. I wonder if a lot of wifi devices coming on swamped the system a bit?