How many years will the iPhone SE last, and will you increase it's life if you use it rarely?

How many years will the iPhone SE last, and will you increase it's life if you use it rarely?

5-8 years, and by then the battery will be quite weak.

Probably last at least 5 years and yes.

Increasing battery life is generally best done
by keeping the the phone connected to a charger as much as possible.

Depends on maintenance.

More than likely it would last longer if use sparingly.