Why do I keep getting kicked off the Wi-Fi network?

I have fully connected my iPhone to the network but every time i come back home after leaving it requires me to sign in again. Would this be an iPhone problem or maybe a network setting problem?

Its probably a network setting problem but Ill try to find out.

That the iphone… Cause every time your iphone go to sleep mode it get disconected from the network

  • Why does the Wi-Fi on my iPhone 4 keep getting disconnected? When I'm using my phone the Wi-Fi keeps getting disconnected and goes to 3G then 4 seconds or so later it goes back on. This happens every minute.
  • Why do my iPhone messages keep getting sent to my phone and another phone? Whenever a message gets sent to my iPhone 4, my brother in Vermont also gets them on his iPhone 4S. So like ill be texting my friend and he can see the entire conversation and he can type. I don't get his messages though. I just wanted to know if there's an easy way to fix this because it just started happening about three weeks ago and none of us have gotten a new phone in a year. I'm not sure if it happened when he went back to College and he crossed a state border?
  • Why do I keep getting randomly logged out of certain websites? Google chrome on my iphone, I keep randomly getting logged out of FB, y! A, and gtaforums, while on my pc, I never have to log back in why?
  • Why do i keep getting other people's iMessages? My sister got a new iPhone 4S and a screen popped up on my iPhone 4.It said something about getting imessage with 614-567-3879 (my sister's phone number) and so i though that meant whether i wanted to have iMessage when talking to her, but i didn't read all the way through. So i hit yes, and now whenever she sends a text to someone or somebody sends a text to her, i receive it to. How do i turn this off?