Why is iOS 8.2 not updating on iPhone 5S? It got me to Agree and nothing happens. Am doing the update via a Wifi connection.

Question

Hello,
Why is iOS 8.2 not updating on iPhone 5S?  It got the user to Agree to the Terms and Conditions but nothing happens.  The user is doing the update via a Wifi connection.  Current OS version on the device is 8.1.3.  User did a hard reboot of the device and still the same result.  Not tried using iTunes as a workaround as we want to know why it's not updating via a Wifi connection.  Storage space available is 9G.
If you know of someone who is experiencing the same issue, please let me know the fix.  Thank you.
Christina

Answer 1

1. I do not know if this will help you or not. In researching this issue with my wife's iPhone 5c 8GB, the most common answer you will get is to adjust this or that setting, and disable this or that App. These at best are only a band-aide solution at all. The best reply I got was from a Verizon Rep that stated "By design, iPhones do turn off WiFi when they go dormant. So if a download is in progress, or information is being back-up wirelessly and the phone goes dormant, it will switch to use cellular data if it is left on". Afterwards, I discovered the exact same information here on the Apple Support Forum to support this statement.
2. Later onward, I read that if you keep your iPhone connected to a power source, it will prevent it from going dormant. In which case, this will prevent the iPhone from turning off the WiFi, and keep it connected to the WiFi. So far, this has help the most in controlling the amount of data usage being used, by my wife's iPhone.
3. Here is a web site that may help you at http://www.iphonehacks.com/2014/09/fix-ios-8-wifi-problems.html .....