What is it with these "because of this I use a feature phone" people?
So instead of paying $750 for an iPhone 7 plus ($150/year of support life) or a Pixel ($250/year of support life) or Galaxy (~$375/year of support life) buy a cheap $100 Android and figure on either replacing it yearly / whenever there's a major Android security bug you are concerned about, or never using any smart features on it like apps/browser (i.e. treat it like a dumbphone)