If they last 5 years, buying a used phone after three years for 20% of the original price sounds like a great deal. Two years later, you'd buy the next one. Af

If they last 5 years, buying a used phone after three years for 20% of the original price sounds like a great deal. Two years later, you'd buy the next one. After doing that for ten years, you'd have spent the price of one new phone, while buying new and using them for 5 years will cost you the price of two new phones over ten years.