The problem I have with most of the "Other" screen glass protectors listed here are Zagg, Spigen, and G-Color are the only glass out of all the glasses that have fingerprint/smudge resistance. So it is only between those 3.
I am not sure if full screen coverage is absolutely necessary, I plan to use mine with the iPhone's Leather case, which wraps along the sides of the phone. I've heard the case sometimes interfere with the screen protector (when you stick the phone in, it catches on the screen protector/glass and pushes it up.
https://www.apple.com/shop/product/MQTA2ZM/A/iphone-x-leather-case-saddle-brown
Another worry I have is whether after you install, if you remove it after several years, will the glass be perfectly clean? Or will the adhesive be so bad that you can't get it off of the phone cleanly?
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I don’t know what other cases are like, but I’ve read Spigen has rounded edges and the Zagg has beveled edges. if they are different I don’t know, but sounds safe enough?