Phone that slides inside tablet shown in Barcelona

BARCELONA, Spain (AP) ? It’s a smartphone that slides inside a tablet for a bigger screen and more battery life. Slip the tablet into a keyboard, and it’s a laptop that works as a phone.

Taiwan’s AsusTek Inc. will roll out its “PadFone” in April, and offered a peek at the three-in-one device at the Mobile World Congress in Barcelona, the world’s biggest cell phone show.

AsusTek didn’t reveal the cost on Monday, but said the phone will have a 4.3-inch at the diagonal screen. The tablet is 10.1 inches at the diagonal. The company says it provides five times more phone battery life.

Company chairman Jonney Shih says the “time has finally arrived when every screen in your lives could transcend into a portal with real time access into your digital world.”