Questions

I just got a new phone and I was wondering, if I go abroad and want to text my friends and family in the U. S., but I don't purchase a local sim card, will I have to punch the U. S. calling code to contact them or not. Because I'm looking at my old phone, and it just has the Area Code without the +1 in front of it and it was working fine before. So I'm not sure if the calling code is needed if my phone is registered in the U. S.

I occasionally need to get a hold of people at work when I'm abroad, so should I just save their number with the U. S. calling code, or will I be able to get a hold of them fine without it?

I've personally seen higher refresh rate displays like 120, 144, and 165hz, but all my devices are only at 60hz. assuming ww3 never happens in the next few years, i do plan to build my own gaming PC which includes buying a high hz monitor. I don't mind having high hz for other devices like a laptop or phone either.

from what I've researched, 250hz is basically the physical limit that our eyes can process (not entirely accurate because we don't view reality in frames). however for most people including gamers, their limit is around 144hz when anything higher just looks the same.

I don't know why Nvidia wants to have eSports monitors have such high refresh rates when the human eyes can't consciously perceive that high. like i know our eyes and brain can subconsciously perceive images refreshing up to 1000 times per second but still. most very high hz monitors have garbage display panels in terms of colour accuracy anyways.