With check in , it was great it popped up the code I needed to put in and kept it up for my easy access. It was also great that it took me to United page to help me check in, very helpful. It could be improved by allowing us to use our return or arrow back key on our phone. Every time I tried to magnify the letters it would highlight something typed on the page and when I pushed arrow back so it wouldn't copy or delete a selected portion it would take me back to sign in; I had to sign in at least four times for using my return key. Every time I would try to enlarge the print I had to resign in again. I was into page 4 when I had to sign in again. Thank you for considering this issue.