The launch of the iPhone Duo, Apple’s first foldable phone, has generated considerable interest in the smartphone market, thanks to its design that combines a traditional phone with a large, foldable screen. However, initial user experiences and technical reviews have revealed a number of issues affecting the user experience, not limited to the screen and hinge, but extending to camera performance and some functions of the iOS 27 operating system.
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These problems highlight the importance of testing the first generation of foldable devices, especially since the success of this type of phone does not depend on the design alone, but on the integration of hardware and software and providing a stable experience in various usage modes.
Problems with the internal screen emerged as one of the most prominent criticisms that accompanied the first days of the phone's release to the markets. Some users posted pictures showing bright lines and cracks in the screen near the folding area, while others spoke of a malfunctioning hinge or difficulty in opening and closing the device.
In a possible explanation for the cause, an initial examination by iFixit suggested that the flexible screen may have been subjected to pressure from one of the internal hinge components, specifically the central support rod, but this explanation has not been confirmed by Apple, and the number of affected devices and the extent of the problem remain unclear.
These reports raise questions about the screen and hinge's ability to withstand repeated use, although they do not necessarily imply a systemic defect in all phone units.
Early technical reviews noted that the phone overheated when playing games, taking extended photos, and making video calls, tasks that put continuous strain on the processor and device components.
The significance of this observation lies in the fact that Apple equipped the phone with a vapor chamber cooling system, but the foldable design poses challenges related to heat distribution within the device's structure. However, there is no evidence yet that overheating is a common problem for all users, or that it necessarily leads to a decline in performance.
Limited camera capabilities compared to Apple's professional phones
Cameras are one of the compromises that a user might not expect when buying a phone at this cost. Although the iPhone Duo is equipped with two 48-megapixel rear cameras, one main and the other wide-angle, it lacks a separate optical zoom camera like those found in the iPhone Pro models.
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