I have finally removed the tempered glass screen protector from my phone. Shortly after I installed it, I noticed a fine crack appeared. I did not drop my phone. The touch surface remained smooth and there was no problem to use. But the crack looks unnerving. I wasn't sure if the crack is on the protector or on the screen beneath it.
Every month or two, a new crack appeared without any cause. Soon there are multiple cracks all over the place. Finally, I can take it no more. I removed it this morning. The screen protector looks like a car crash.
I replaced it with a simple plastic film protector. It is perfectly smooth as it should be. The same problem happens to my tablet. No more tempered glass screen protector for me.