Technology What exactly is a foldable phone, explained Updated : February 26, 2019 06:51 AM IST Foldable phones are essentially a phone and tablet rolled into one. These phones resemble a conventional smartphone but opens like a book to reveal a second display the size of a small tablet. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.