iPhone Duo Overheating During 4K 60 FPS Video Recording? Apple Customer Service Reportedly Responds to Claim
Apple’s first foldable iPhone Duo reportedly overheated during sustained 4K 60fps video recording, with a Chinese reviewer saying the area below the cameras became extremely hot after around three minutes. The reviewer also reported outer display flickering after bending the device backwards, while Apple said single-device testing has limitations.
A Chinese tech reviewer has reported significant overheating on Apple’s first foldable smartphone, the iPhone Duo, during high-load video recording. Tim from MediaStorm (影视飓风) tested a demonstration unit at Apple’s launch event and found the device became extremely hot after roughly three minutes of 4K 60fps filming.
He described it as one of the hottest phones he has tested, noting that the area below the cameras was almost too hot to hold while other parts of the device remained cooler. Tim attributed the issue to the internal layout, which concentrates computing and signal components near the camera module. Even with a vapour chamber, the limited space inside the foldable design appears to restrict heat dissipation. How Much Apple Paying to Samsung for iPhone Duo Foldable Display?.
Apple Responds to iPhone Duo Overheating Claims, Says Tipster
Heat Issues During Video Recording
In normal daily use the temperature remained manageable, according to the reviewer. The problem surfaced mainly under sustained high performance tasks such as continuous video capture. By comparison, the iPhone 18 Pro series, which also uses the A20 Pro chip but features a larger vapour chamber, showed more stable thermal behaviour under similar loads.
Outer Display Flickering Reported
Tim also said the outer display showed flickering after he unfolded the phone backwards. He stated that he did not apply force. Apple customer service later responded that damage from bending the device in that manner would not be covered under warranty.
Apple’s Response
Apple customer service noted that a single-device test has limitations and advised potential buyers to try the phone in stores after official launch. The company added that new devices may require three to five days to adapt following initial setup. If hardware-related heating issues arise, users can seek checks through technical teams or retail stores. iPhone Duo vs iPhone 18 Pro Max: Price, Specifications and Features.
The iPhone Duo is Apple’s first foldable device and remains in the early post-announcement phase. Full commercial availability and broader real-world testing will provide a clearer picture of its thermal performance
(The above story first appeared on LatestLY on Sep 19, 2026 02:06 PM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).