Heating issues

I'm planning to get a 13 mini for my wife and myself. Reading the entries and comments here, I feel two major concerns: battery life and heating. Battery life can be dealt with by replacing it - no biggie.

Question to those who don't play a lot with the phone: do you have a heat problem? I use my (android) phone mainly for podcasts/audio books, reddit and some social media, she (same android phone) texts a lot. Will we have a hot brick in our hands or will the device stay cool?