Apple is surveying iPhone Duo buyers about the crease, display size and under-display camera, MacRumors reports

Apple has started asking iPhone Duo owners what they think of its first foldable, according to MacRumors. The site reports that some buyers are receiving email surveys that cover the size of the display, the crease, the under-display camera and other features, roughly two weeks after the device went on sale.

MacRumors, which credits a reader tip and published screenshots of the survey, notes that follow-up questionnaires after a new product launch are not unusual for Apple. The report does not say how many customers received the email or how they were selected.

What the survey asks

According to MacRumors, the first question asks why the buyer chose the iPhone Duo now. The example answers listed include wanting to try Apple's first foldable, an impulse purchase, and an expectation that smartphone prices will rise.

Later questions reportedly ask about the size of the display when the phone is closed, how visible the crease is, whether the under-display camera is distracting, and how good its image quality is. The survey ends with an open-ended question about what the owner would add or change.

What it leaves out

MacRumors points out several topics the survey apparently does not touch: Touch ID, the experience of using apps that have not been optimized for the Duo, and display cracks. The site describes all three as common complaints about the device.

For context, MacRumors says the outer display measures 5.4 inches, about the same size as the discontinued iPhone mini line, and that the inner camera under the screen is limited to 4 megapixels, which was one of the main criticisms in reviews.

Why it matters

Surveys like this do not reveal Apple's plans, and the company has not commented on the questionnaire. They do show which design trade-offs Apple is most curious about on a first-generation product, in this case the crease and the under-display camera. Apple has not said how it will use the responses.

This report rests on MacRumors' description of the screenshots; Apple has not confirmed the survey publicly.