I tried to update to the newest version for my iphone and for some reason I am getting a restore the iphone on my phone and computer. Why is this happening, I dont want to loose all my info and have to put it back in.

I did back up my phone the other day and it might have done it again today to my computer and itunes. But why is this message coming up? I have never had an issue with updating the iphone to the newest version. When it told me to do this, i held off, because I don't know what I might be loosing. Why is it doing this in the first place? Why did it not complete it?

Monday I ended up on the phone with Apple Support just to be sure I was doing the right thing and to check my back up info so I could be sure I didn't loose important data. They were very nice and helped me finish the process. When I told the tech that I couldn't download the new update and install from my iphone that is when I went to the computer and that's when I got this recovery mode thing on my phone. He told me there must have been a problem and that is why he thinks I couldn't down load it from the phone. I had to go to ITunes on my computer. Once we did the recovery we were able to check that I had a back up from the day before, so I didn't loose anything. He stayed with me til the process finished. I also found out I can prevent the auto sync for the future by setting the directions on that.

I am good now and my phone is operating fine, with the new update. Thank you all who commented back to me.