Recently on my iOS devices, the Comcast Homepage is getting hijacked by people offering gift cards. Once this happens, you cannot get back to the Homepage unless you close the page and open a new one. This ONLY happens on the Comcast Homepage. I have used both Safari and Firefox with the same result. I am using my own modem, and have been unable to find a way to turn off the option to use my network as a WIFI hotspot, so I am not sure if this would help.