Moi? I use currently a NOTE 20 ultra 5g. Probably my second best phone, I only hate the fact it’s so massive (I miss being able to use just one hand for my phone) and the mediocre battery life for someone like me that watches a lot of videos. But the S pen is so handy those few times you need it.
iPhone SE. I would use a smaller model of iPhone, if there was one. I need a phone I can easily take with me, not some aircraft-carrier sized high-tech device ;)