help me with my Iphone 4 CDMA Wifi problem!!

[kathiny]

hi everyone i have a 32 gig iphone 4 on verizon.. my problem started when i was on IOS 5.0.1 (jailbroken)... My Wifi will connect for a little while and then it will stop working... my Safari/Facebook will stop working it says server is not responding.. however, this router is brand new and I have tried all the steps in restarting it and rebooting it and even tried a different router and still the same issue.... *computers and other Ipods connect fine*... the Wifi only works when I turn the phone off and then back on (a respring does not fix it)... but then a few minutes later.. the server will stop responding again... I have tried it at different peoples house (with different routers and ISP's) & still I get the same problem.. so im thinking its a issue with the phone.. Also, I am now on a fresh restore version 5.1.1 (Jailbroken unthered) and I am getting the SAME issue... What do you guys think may be wrong? I have tried all the steps (resetting networking connections, forgetting the network, etc) yet i still have this issue!