In addition to new features, supported phones also get security patches that protect them from hackers. Now that Apple has dropped support for the iPhone 8 and X, these models are more vulnerable to security threats.
The more interesting takeaway is that, on average, the phones had lost 7.8 percent of their remaining value by June 13 but regained some of it by June 20. The rate of depreciation accelerated as the date of general release drew closer, reaching 30.3 percent on 29 August and increasing to 42.8 percent on September 12.
The same will probably happen with the iPhone X and iPhone 8. If they follow the same pattern as the iPhone 6S and iPhone 7, they might recoup some of the lost value during the last eleven days of June but their value will decline rapidly thereafter.
SellCell suggests selling your phone around that time if you want to get the best possible price.
The iPhone 8 and iPhone X were released in 2017, meaning they got updates for six years, which is a year more than what the best Android handsets have been promised. So no tears will probably be shed over the end of software support.
