question regarding iphone 4s privacy setting "photos"?

[Meriam]

I was using the app instagram and they asked for access to my photos. so from there i went to my "settings" and clicked "privacy" and then i clicked "photos" and when i tried to turn the button for instagram to "on" but it wouldn't let me, for some reason the button was kinda greyed out. I did try calling apple tech help, but they didn't help at all:/

[Android Core]

by doing settings>privacy>photo>check on.... you are blocking 3rd party apps (apps you downloaded to the phone) from having access to your photos....

if you want instagram and facebook and twitter and whatever to have access to your photos so you can upload them, you will go back and turn photos OFF!