screen burn-in

I'm looking to upgrade my 2017 10,5" iPad Pro, which I'm mainly using for notetaking during language learning or researching. Since I've really come to like the 120 Hz display, I already decided that I want another one on my new iPad. That really only leaves me with another iPad Pro, so I've...

Phone is over a year old now and battery at 97% viability. I generally keep my phone in smart invert for better battery life (yes I realize it's not a giant difference maker but I find the screen easier to read this way). I generally always have my phone set to: settings -> general ->...