When I tried to write a note, on the left side middle the pen doesn't correspondence with the screen like if it has a blank hole the size of a marble
Write on the note, make a circle around the area and provide screenshot
Does your case have a kickstand with a magnet that holds the kickstand closed? That's typically the issue Take your phone out of the case and try it. My bet is that's the issue. Especially if it's a localized issue.
You were absolutely right I didn't notice the phone case I bought had a magnet, but when I took it off it the pen works on the part that didn't work. Thank you I was about to go to At&t to complain