My iPhone wont connect to my wifi?

[Lyric]

My iPhone 4s doesnt connect to my wifi router at home, but it does connect to any other wifi router. When I attempt to connect to my wifi, a webpage pops up which asks me to log in (like it would if i were using public wifi). These webpages vary, there is: airport.us, thinkdifferent.us, appleiphonecell.com, and captive.apple.com. I have reset my network settings, and my entire iPhone, but the problem remains the same. I am not currently using a sim card, so i was wondering if that may be causing the problem. The phone worked absolutely fine until about three weeks ago, so i unplugged my wifi router, and the phone started to work again. About a week after, the wifi problem happened again, and now unplugging the wifi router isnt any help. I use the wifi at school, at friends houses, at restaurants, and they all work, but my wifi at home does not. I can choose to use my wifi without having access to the internet, which when i do, I still get notifications for iMessage, Messenger (app), snapchat (app), instagram (app) and twitter (app). I was also able to use FaceTime, but since reseting my entire phone, I cannot. Other people can use my wifi at home freely.

[Jay]

Do you have anything else connected to the same WiFi you're trying to connect your iPohone to ?