I installed IOS 11 on my IPHONE today. It is terrible. The sign in screen is so fuzzy and it is difficult to discern the numbers on the screen. Before the upgrade, the numbers and circles around the numbers were much easier to read and see. The font sizes on the Apple programs/applications are out of wack for the screen size of an IPHONE SE. For example, on mail, the INBOX font is so big that it pushes mail messages off the screen - where I use to be able to see four or five messages, I can only see three and that is pushing it. Calendar is no longer useful because the colors and graying make it very hard to see or discern dates. By the way, calendar has become worse and worse with updates... On the settings screens, it now lists all of my devises - I don't want anyone to know that I own multiple Apple devices - and if it is going to show the devices, it should show every single one of them. Notwithstanding, the settings use to be easier to use - you would push your device and all of the information would pop up for you. Now there is some dumb icon that shows my name and my email address. If someone breaks into the phone, I don't want them to be able to see this information. Moreover, the print is much harder to read than under the old operating system. I could go on... the bottom line, how do I uninstall IOS 11 or do I have to buy a new phone or do I have to go to another company to get a phone I can read?