iPhone Duo Running Hot: What Reviews Found

Recently, various reviews of the iPhone Duo have discussed its thermal properties, leading to diverse opinions among reviewers. Some users have noticed that the device gets hot, especially during activities like FaceTime and taking photos, while others consider it merely warm. Joanna Stern, one of the reviewers, mentioned that she had to end a FaceTime call because the phone felt excessively hot, even stating it seemed like it would burn her hand.

## Why it matters The heating of a mobile device can be a determining factor in user experience. While it is normal for phones to heat up during intensive use, excessive heat can affect performance and device longevity. This may lead users to question the quality and safety of the iPhone Duo.

## What we know Apple has responded to these concerns by indicating that the warmth is a sign of the iPhone Duo's thermal design, which is intended to move heat away from the chip to maintain optimal performance. However, this explanation has not convinced all reviewers, who continue to feel that the phone gets too hot in certain situations. The iPhone Duo uses a vapor chamber system similar to that of the iPhone 18 Pro, albeit with a thinner vapor chamber and a flexible graphite pipe in the hinge to enhance heat transfer.

## What remains unclear It has yet to be confirmed whether the reported heating is a widespread issue affecting all iPhone Duo users or if it is an isolated case dependent on individual usage. The company has not detailed whether improvements will be implemented in future software updates to address these concerns.