Samsung Galaxy Z Series
In short
A line of foldable smartphones from Samsung Electronics that features flexible displays. The series includes the book-style Z Fold and the clamshell-style Z Flip.
In plain words
These are mobile phones that can fold in half to become smaller. Some open up like a book to show a large screen, while others fold like a locket to fit easily in a pocket.
A simple example
A user might use a Z Fold to read a digital newspaper on a large screen, then fold it shut to carry it easily in a small bag.
Why it matters
They represent a major shift in mobile design by combining portability with large screen space. They push the limits of how durable flexible glass and hinges can be.
Easy to mix up
Do not confuse these with the standard Samsung Galaxy S series, which uses traditional rigid glass screens.