I am living in Taiwan and need two phones - one for here and one for the US. I need both apple and Android for Dev. For my us phone I buy pixel and keep it 'till the wheels fall off. For Taiwan I can buy a used two or 3 yo iPhone that is still supported for about 100 buck us. And I, again I will keep it as long as I can. I had an iPhone 6 which I would have kept using except the phone company app that I use to pay the bill stopped working after an update.