Fri Nov 13 2026, 02:43 PM EST · 1 minute read

CNET's Fold-a-Phone rig | Image credit: CNET

As it turns out, you can damage your iPhone Duo by opening and closing it too much, at least theoretically. Don't worry, you don't have that much time on your hands.

Three weeks ago, CNET put the iPhone Duo on it's custom testing rig, the Fold-A-Phone. Now, after 440,300 folds, it's finally reached its breaking point.

Sort of, if you're willing to define "breaking point" loosely.

According to CNET , it still opens 90 to 95 percent of the way on the Fold-a-Phone rig. And if you open it by hand, you can still get it to open fully; it just doesn't feel as snappy as it used to.

CNET's readings and footage showed changes in how much force it took to open the phone around 390,000 folds. This included losing the distinctive snap it had upon opening it fully, and the hinge, perhaps unsurprisingly, was looser.

The display still holds at other angles without issue.…