iPad mini 6

I have a iPad mini 6. It's a nice tablet - small, lightweight and powerful. The screen has a high resolution. The trouble with that when you increase the resolution on a small screen you get more to look at but it becomes almost too small to see. I'm an older person and my eye sight isn't as good as it use to be.

I also own an 8 inch Lenovo tablet. I can adjust the resolution on this $100 tablet for my needs. Why can't I do that on my $600 iPad mini 6?