The body temperature measurement function should appear in the next generation of Apple Watch Series 8 smart watches. Interestingly, the famous analyst Ming-Chi Kuo said that we could see it in the Series 7, but there were some software problems that need to be solved by Apple.

In his tweet, Kuo wrote: “Apple canceled body temperature measurement for Apple Watch 7 because the algorithm failed to qualify before entering EVT stage last year.” EVT (Engineering Validation Testing) is one of the stages of engineering testing, in which hardware functions are tested before the project approaches production.

However, the analyst expressed hope that Apple will still be able to overcome the problems associated with the function, and its algorithms will meet the high requirements of Apple for mass production.

Kuo notes that the function is more complex than it may seem at once. “The challenge in implementing precise body temperature measurement is that skin temperature quickly varies depending on outside environments. A smartwatch can’t support core temperature measurement in terms of hardware, so it needs an excellent algorithm to work together,” the analyst wrote.

Kuo also notes that Apple is not the only one struggling with the problem, as “Samsung is also facing this problem.” Kuo believes that the Galaxy Watch 5, which will be released in late 2022, may not have this feature “due to algorithm limitations.”