As always, new releases of IPhones include numerous articles about deliberately slowing down older IPhones. It is claimed that users are to be animated to buy new products.
Finnish developers have published a benchmark test based on a study that claims otherwise. As a result of this study, neither the iPhone 5s, nor the iPhone 6, iPhone 6s or iPhone 7 showed a slower speed, only the determined performance in the CPU test was slightly lower over time - which is not noticeable by the user, however, according to Futuremark.
Read The Study: https://www.futuremark.com/pressreleases/is-it-true-that-iphones-get-slower-over-time
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