I have always been able to connect to any public wifi with no problems. At home I am unable to connect. I have Knology internet service with the Knology provided modem connected to a desk top Mac. For some reason Knology does not provide wireless routers so I purchased a Trendnet modem at Comp USA. I had no problem hooking it up and got an instant connection with my Dell laptop. When I turn the wifi on my Samsung GS2 phone I get the security sign on and it starts scanning. Then it says disconnected, then scanning, then disconnected and so on. any suggestions?