If someone came up to me and asked if they should update their iPhone 6s, I’d say ‘yes’. And I’d tell them repeatedly that it’s because they are at the very end of support from Apple. I’d praise them for doing a good job of keeping hold of something for a long time and getting all the value out of it. But ultimately, no matter how much they love it, it’s needs to be replaced.

This goes for Android devices as well. While I’m not as up to date on how fragmented their updates are now, if they aren’t getting support for much longer, it’s time to go.

EDIT: That the original poster ALREADY bought the mini 12 further illustrates my point. They know it’s time.