Hi, I'm going to buy a refurbished iphone as my phone has finally given up (have had a refrbished iphone, ipad and macbook in the past and no issues). I don't want to spend much so not looking at the latest models, but I don't want something with an operating system so old that I can't install the latest apps, or update them. Any advice? Would iphone 7, or 8 be ok? 6 or 1st generation SE? And what GB is sensible and won't fill up too fast? Better an older phone and bigger GB or newer phone and smaller GB for the same price?
I basically use the phone for whatsapp, emails, photos and a handfl of apps, nothing fancy.