DEVELOPING: Samsung's Galaxy Z TriFold hits the market January 30 with a staggering $2,899 price tag.

The phone boasts a 10-inch display when fully unfolded. It's the largest screen ever on a Galaxy phone.

The TriFold is Samsung's first trifold phone in the U.S. It beats even the most expensive iPhones in price.

The phone will be sold at Samsung Experience Stores and Samsung.com. It will not be available through mobile carriers.

Apple is rumored to be releasing its own folding phone later this year.

This is a developing story.