Parvati was raised by traditional wizards, she didn't have much experience with muggle technology. "You just talk in to it to speak with someone?" she asked, raising an eyebrow. She didn't see the use when you could just use the fireplace, send an owl, or meet in person to hold a conversation. Besides their fashion, Parvati didn't see much appeal in muggle inventions.
"How long until it's delivered?" she asked when he hung up, as even she was growing hungry.