Hey Apple, there's another way!
How hard would it be for Apple to put a bigger battery in some of their 'phones?
I have a Moto G7 Power and it shames my iPhone 6s Plus every day. My iPhone (with it's new battery) needs charging everyday, the Moto every other day. That's just to be on the safe side, 'as it looks like the Moto could run for 3 days. I use the Moto as a WiFi hotspot and for mapping. It's the iPhone's interface and and software integration that stops me looking for a premium Android 'phone