Who I have the same questioned this topic

I started having an issue a few weeks ago where when connected to WIFI anywhere certain pages do not load or they load  very slowly. ex: Facebook will either not load or images do not show up or it will say "can't connect right now".  My mail application will not sync on WIFI. Pandora buffers constantly. I can do common web searches and use other Apps that require connectivity. As soon as I turn off Wi-Fi everything works. I have tried turning my phone on and off a couple times a day, tech support with Verizon as well as have read through the previous posts, I turned off my Power Saving Mode, and this issue has not been resolved. Please help, thank you.