I bought a cheap Samsung dumbphone for this very reason--I was actually missing important calls (a job interview invitation was what tore it) because my smartph

I bought a cheap Samsung dumbphone for this very reason--I was actually missing important calls (a job interview invitation was what tore it) because my smartphone battery couldn't handle a day of moderate use. Now, I keep my smartphone in my pocket for internet use (like a little computer) but for calls, I use my little Samsung. It lasts about a fortnight with daily use of up to an hour on calls before I have to charge it.