I have always been told that Apple don’t sell tempered glass screen protectors. They say you don’t need one.
however we all know that to keep your phone in it’s best condition and for the unexpected drop or keys in the bag moment for the wife the screen can be scratched or cracked.
Apple like with the iPhone 6s have gone to a manufacturer that slightly curve the screen more than with the 7, 8, X 11. As nobody gets this issue unless you have ‘some’ ip6s or now all ipSE 2020 models.
slightly smaller protectors clash with the end of the display and give off a rainbow effect 🌈 and larger protectors (1mm) then don’t stick to the curve and leave a halo.
some Full screen protectors can look better but then the case you buy won’t fit without lifting the edges of the protector.
A good solution is the material wet on protector made from repairable soft clear PET. This it not as hard do bends in the edges. The material is used on helicopter blades and can repair itself on minor scratches.
I have seen it made by Spigen, Knight, Zagg. However they may now have been discontinued in preference to tempered glass. (These are not the thin PET material plastic ones but a better alternative)
For me I have picked the best glass one I could get to fit and my wife thinks it’s fine. Would drive me nuts with a halo but she doesn’t really care.
cheers All 👍😎