A new kind of phone opens like a book. Apple recently introduced a foldable phone called iPhone Duo. Its screen can bend and close safely. A hinge connects both sides and helps the phone move. A hinge is a small part that lets things open. (apple.com)

When closed, the phone has a useful outside screen. Open it, and a much larger screen appears inside. People can read, watch videos, or play games more easily. They can also use two apps side by side. (apple.com)

For example, a student can watch a language lesson. At the same time, they can write notes beside it. This may make study easier on a train or bus.

The design offers a phone and small tablet together. It fits in a pocket but opens for bigger tasks. However, buyers must wait before it reaches stores. (apple.com)

This new shape could change how people use phones. Would you enjoy reading an e-book on this screen? An e-book is a book that you read on a device.