Do you know that there's a website that can tell you when the best time to sell your smartphone is? It's called MusicMagpie and you can find most of the popular models in there. There's even ranking with smartphones that have lost value the most within the first year of their launch and one that shows which depreciated the least. According to the website, iPhones have retained its original price the most with the iPhone X topping the chart. The latter even set a record by retaining 68% of its original price even though we expect the new iPhones to be announced as early as next...
Source: https://www.gsmarena.com/you_can_sell_your_iphone_x_at_68_of_its_value_just_a_week_before_the_new_one_arrives-news-33141.php
