How to verify installation of a new battery in an iPhone?

A few years ago, when Apple slowed down iPhone clocks to save battery power,I didn’t join the crowd, which is to say, I didn’t replace the iPhone SE’s battery. My battery charge life is satisfactory because I’m a smartphone minimalist, ie relying mostly on native apps and removing them from action (swiping up) when I’m done… Continue reading How to verify installation of a new battery in an iPhone?