I have heard of this type of issue during an update if it gets corrupted, this seems like a software update glitch. If possible i would go online to the samsung website and search for the previous firmware, sometimes firmware when installed can get corrupted and cause issues with different hardware. Additionally if your phone is under warranty, you can try to have a rogers location use their in store tune up application to diagnose the phone.
In store repair and diagnostics is being offered, and if the phone wifi has in fact failed, i am sure you can get a loaner and have the device sent in for warranty repair. Sometimes additionally there are alot of helpful technical people on the android forums that can help as well some even post the original firmware.
If your not a technically minded person, then i would recommend in store diagnostics and then if necessary warranty replacement through the location.
Frist let me thank you for replying to my current situation. Thank you. Here are my replies.
Question #1What happens when you try to turn on your Wi-Fi on your Samsung Galaxy S4?
Answer #1- Not able to turn on the Wifi, the Wifi does not start - the button can be moved over but it will not stay over. The button slides over but moves back as soon as you take your finger off the button. ( no change in the wifi icon color )
Question #2 Have you tried backing up your device and resetting your phone to factory settings?
Answer #2 I have backed up my device and reset to what I thought was factory settings. I now have a Rogers icon and numerous Bell icons. ??? So at one time I went into kies and installed the latest update and this is what I got.