Ahh let the OCD begin! As the title emplies this is most likely a random thing and I Seriously doubt it will hurt the phones performance. With that said...YES I do have a slight click on my 1 week old iPhone X 256GB somewhat $1,400+ Phone. I only noticed as my house was completely quite and I was cleaning my screen with a micro fiber cloth and caught it at the top right hand corner as I was cleaning it. Things have changed in the last 10 years, but with a mass produced phone like the X things like this will happen. If it's not this, it's screen color shifting, if not that it's a crackling speaker, if not that it's a phone that gets severely hot when charging it...lol the list gets lengthy with all these phones. As for me I will keep mine as it's fairly perfect and doesn't include any of those other bugging things. Providing it doesn't get much louder and to the point where I can hear it just by typing on it it I will just except it and forget it's there hopefully.