I think with the price of today's phones people are keeping them longer. My launch date iPhone 6 was bought by a colleague and with iOS 12 he's very happy with

I think with the price of today's phones people are keeping them longer. My launch date iPhone 6 was bought by a colleague and with iOS 12 he's very happy with it. My iPhone 7 is going strong since launch and with a cheap battery replacement and continued support from Apple I expect it'll last another couple more before I give it to a family member, most likely my mother, where it'll do whatever she needs for a couple more.