my iPhone's service has been off for 5months, where did my wifi go?

[exiphoneowner]

Okay, so I turned my iPhone service off 5 months ago, and the wifi worked for about 2 months, and then it just didnt pick up anything anymore.
Is there anything I can do?
Please help!

thanks

 

[Pgohlke]

try a restore in itunes?

 

[doubleatheman]

Ive assumed you have tried to use your wi-fi on another pc to rule out the wi-fi/router itself may be causing the problem?