According to social media posts, while the plane is airborne, the iPhone's rear panel separates from its frame. Although the device does not overheat excessively, shut down permanently, or catch fire, visible battery swelling during flight is a situation that should not be ignored.
Issue Resolved After Battery Replacement
According to user complaints, the battery swelling issue can be observed in various models, such as the iPhone 16 Pro Max and iPhone 15. Some users report that they have not experienced the problem again after Apple replaced the battery.
What Causes the Issue?
Lithium batteries can produce gas over time. At normal atmospheric pressure, this gas remains compressed. In an airplane cabin, air pressure drops compared to sea level. This pressure change causes the compressed gas to expand, leading to temporary battery swelling. This theory explains why the swelling appears during flight and disappears after landing.
Even if the battery swelling subsides, the danger does not disappear. Battery expansion can damage the internal structure, making the phone more vulnerable to water and dust. More importantly, a damaged battery increases the risk of thermal runaway, especially during charging.
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