iPhone Duo Clears 100,000 Folds in Foldable Stress Test

A foldable device called the iPhone Duo has been put through 100,000 folds on an automated testing machine, and the test has not stopped yet. The rig opens and closes the phone over and over, a basic way to see how the hinge and display hold up to wear over time.

Reaching six figures is a meaningful milestone for a foldable. Hinges and folding screens have been the weak point of the category since its first models, so durability is one of the first questions buyers and reviewers ask. A high fold count does not by itself predict how the phone will fare after a year in a pocket, but it is a useful early signal.

The source material does not share results at each stage, the device's full specifications, or whether any failure has appeared. The headline's question, how high the phone will go, is still open. Later updates from the test would be needed to show whether the device has a clear limit or is still holding up.