iPhone Duo Reviews Highlight Thermal Management Concerns
Recent reviews of Apple's new foldable iPhone Duo report inconsistent thermal performance, with some testers noting excessive heat during camera use and gaming. While Apple attributes the warmth to its vapor chamber design moving heat away from the A20 Pro chip, critics observe noticeable lag and discomfort. The device features a thinner vapor chamber and a flexible graphite pipe in the hinge, raising questions about long-term thermal efficiency in its dual-screen configuration.
Key points
- Apple's iPhone Duo, featuring a dual-screen design and A20 Pro chip, has received mixed reviews regarding its thermal performance and heat dissipation capabilities.
- Joanna Stern of Bloomberg reported the device's back became uncomfortably warm during FaceTime calls and photography, prompting her to end a call to avoid discomfort.
- The Verge noted significant heating during extended camera use, particularly when both displays are active for Duo Preview, leading to noticeable performance lag.
- PetaPixel observed the device warming up during gaming and photo editing, indicating that processor-intensive tasks stress the thermal management system.
- Apple explains the warmth is intentional, as the thinner vapor chamber and flexible graphite pipe in the hinge are designed to transfer heat between the two halves for better dissipation.
- The iPhone Duo shares the same custom vapor chamber setup as the iPhone 18 Pro but utilizes a thinner chamber and a new graphite pipe to manage heat in its foldable form factor.
Reviews of Apple's latest foldable smartphone, the iPhone Duo, have highlighted significant variations in thermal performance across different usage scenarios. Multiple independent reviewers, including Joanna Stern of Bloomberg and The Verge, reported that the device generates noticeable heat during routine tasks such as video calls and photography. Stern specifically noted that the back of the phone became warm enough to require ending a FaceTime call, describing the sensation as potentially uncomfortable for prolonged use. The Verge added that extended camera usage, particularly when both screens are active for features like Duo Preview, causes the device to heat up significantly, resulting in observable performance lag.
Apple has addressed these observations by explaining that the warmth is a byproduct of its thermal design. The iPhone Duo utilizes the same A20 Pro chip and custom vapor chamber setup as the iPhone 18 Pro, but the vapor chamber is thinner to accommodate the foldable form factor. To compensate, Apple integrated a flexible graphite pipe within the hinge mechanism, which transfers heat between the two halves of the device to increase surface area for dissipation. According to Apple, this design prioritizes sustained performance by actively moving heat away from the processor, even if it results in a warmer exterior.
Despite Apple's explanation, some reviewers remain skeptical about the user experience. PetaPixel’s testing indicated that the device warms up during gaming and photo editing, suggesting that the thermal system may struggle under sustained high-load conditions. The Verge also noted that third-party applications, particularly video and Google apps, contribute to the heating issue. As the iPhone Duo targets a premium market segment, these thermal characteristics may influence consumer perception and adoption, particularly among users who prioritize long-duration multitasking on dual displays.
Sources
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