While benchmarks show that processor and graphics performance are not intentionally hindered with successive iOS updates, it is entirely possible that people feel that their smartphones are slowing down over time.
Futuremark released the report in response to a recent blog that suggested iPhones did slow down after new models were releases.
The company also measured CPU performance and found a very slight drop in performance over time, but this difference is so small it is unlikely to be noticeable in everyday use.
When you update your iPhone and iPad to iOS 11.1, expect to see hundreds of new emoji. The results are submitted from iPhone owners who've installed its 3DMark benchmarking app. The company collated data from more than 100,000 benchmarking tests done on iPhone variants starting from iPhone 5S to the iPhone 7.
CPU performance did decline in the results, but only slightly, and the graph leveled off from May 2017 onward.
Last week Apple hurriedly released iOS 11.0.2 last week after being inundated with complaints from users that iOS 11 was playing havoc with their iPhone and iPads.
Users of the newer iTunes 12.7 can still install the App Store-friendly version, but may need to create a new iTunes library due to the incompatibility of your current iTunes library with the older version. "Knowing that there is a new and improved model available" leads a customer to think their own model is outdated.
For business users, the information could be used to forgo upgrading your fleet of corporate iPhones if there is no other compelling reason to do so.
It is a truth universally acknowledged that as your iPhone starts to get older, it'll run slower and slower until you finally give in and hand over another bunch of bills to Apple for a new model - or is it?
Futuremark says the perception an older iPhone is slowing down is added to by a psychological effect.