CNET Labs Day 9: iPhone Duo Fold Test Live Stream and Viewer Q&A

CNET Labs lab director Matthew Murray hosts the ninth day of the foldathon, a live test measuring how many folds the iPhone Duo can endure before breaking. The stream covers the current fold count, technical details of the testing machine, and answers viewer questions about the phone, the machine, and the test methodology.

■ Test Progress and Announcements
- iPhone Duo has surpassed 278,000 folds and exceeded the Samsung Galaxy Z Fold 8's test count
- 300,000-fold spectacular planned for the following day's live stream
- Live streams run Monday through Friday, 1–5 p.m. Eastern, through at least November 20
- CNET staff member fold-count estimates shared at the end

■ Technical Details
- Replacement of the nylon-coated braided steel wire filament used to open the phone
- Phone secured via 3D-printed sled and industrial-strength double-sided tape
- Test speed intentionally kept constant to avoid heat buildup and invalidating prior data
- Explanation of the folding mechanism and how the machine operates

■ Viewer Q&A Highlights
- Apple has not publicly disclosed a fold rating for the iPhone Duo
- Machine design inspired by a Motorola testing rig; no manufacturer input
- Phone purchased at retail in October, not a hand-selected unit
- Comparisons across different test machines will not be made
- Discussion of the phone's condition after nearly 280,000 folds

■ Product Discussion
- Thoughts on iPhone Duo, iPad Pro, iPad mini, and general Apple ecosystem fit

折りたたみスマホの耐久性テストに関心のある方、テスト機材の仕組みや実験設計に興味がある方に向けて、視聴後は折りたたみスマホの折り耐久性に関する検証方法と、その結果の読み方について理解が深まります。