Q: why is my phone getting stuck on the slide to upgrade screen when i updated it to ios9?

I updated my phone to ios 9 and it allows me to put in my password for the first screen, then it asks me to choose my wifi, and afterwards it gets stuck on the slide to upgrade screen. i've tried restarting it over and over and my information is not backed up. Im really trying to avoid restoring it because i do not have a computer that my iphone is synced to!