With the special cases that Moment provides, you can screw the add-on lens in front of the built-in lens. Works pretty well in fact! But, admittedly, since the iPhone 11 I started using them less, and now with my current iPhone, I haven't used them a single time, since indeed, the built-in lenses work incredibly well.
!DIY
!HOPE
!PIZZA
!INDEED
!ALIVE
!VSC (indeed! We should!! :-D ) (Hostile bot take-over Part III :-D )