Now Playing: Apple ships first batch of HomePod units

Now Playing: Apple unveils HomePod smart speaker

Now Playing: Let the bargain hunting begin

Now Playing: Best apps to score deals for Black Friday

Now Playing: We tried the compression bodysuit that celebs are using to tone up

Now Playing: Could regulation be coming to Silicon Valley?

Now Playing: The 'GMA Day' audience plays a hilarious game of 'cell phone scavenger hunt'

Now Playing: Are robots taking over the world? 'GMA Day' breaks it down in the 'Robot Roundup'

Now Playing: Facebook executive denies blocking investigations into election meddling

Now Playing: Apple investigating complaint iPhone X overheated and caught fire

Now Playing: Uber and Lyft to face competition from Waymo

Now Playing: Facebook, WhatsApp, Instagram suffer temporary outage

Now Playing: Limes may be lemons

Now Playing: Black Friday ads released early

Now Playing: Samsung plans to present its new flip smartphone

Now Playing: Online retail giants offering free shipping deals this holiday season

Now Playing: Amazon to split new headquarters between 2 cities

Now Playing: Amazon gives holiday gift to customers

Now Playing: Homeowner yells through doorbell to stop potential burglars

Now Playing: Online holiday sales skyrocket ahead of Cyber Monday and Black Friday