Joanna Stern Reviews the Duo: 'The Good, the Bad, and the Buggy'

Joanna Stern released a 16-minute video review of the iPhone Duo. She commissioned a custom robot to fold and unfold the device 32,000 times in a week to test the hinge, shot camera samples in a dark bar, and said she really missed Face ID.

• A custom robot folded and unfolded the iPhone Duo 32,000 times in a week to test the hinge
• The 16-minute review includes camera tests in a dark bar
• Stern singled out the lack of Face ID as a major drawback