iOS 7 install issues

[redhawk87]

I was downloading the update with out my iPhone plugged in to power and I got a message saying my battery had to be above 50% or I needed to be connected to a power source. I connected it to a power source and went back to services and it says the update has been downloaded but I assume not installed. I click on install and it sits there saying verifying installation for a while then comes back and says I am unable to install the update at this time. Since I have already downloaded iOS 7, I shouldn't need to use much bandwidth with apple servers right? So I should not be affected by any overloaded servers? I am a little confused why I am seeing this error.