Beth asked: “My wife as an iPhone 6. She’s trying to download the new OS. Every time she tries to do it, it says she is not connected to the Internet. It does it whether she is connected to Wi-Fi or LTE. I read that it may be due to a corrupted download. So I deleted it and re-downloaded it and it did the same thing.”
Joshua, if your wife’s phone refuses to upgrade the OS on it’s own, your best bet might be to bypass it altogether and install it from your computer.
Most people don’t bother to do it this way anymore, but you can still update an iPhone through iTunes. Just plug in the phone, click on update, and let the computer download the file and check it.
Your phone wouldn’t need to be connected to anything because it would be the computer dealing with the download, so the phone shouldn’t complain.
It may leave you wondering what is keeping your phone from doing it in the first place, but since the answer to that usually ends up being “I don’t know, I had to restore to make it work,” it ultimately doesn’t matter why, it just matters that you can update your OS if you want to.
iOS 10 is widely reported to be causing iPhones to freeze following the update, also. So you might want to wait for a few days, or even a week, and see whether iOS 10.0.2 comes out quickly (the initial release version was 10.0.1).