How much does replacing a wifi chip cost?

[iMore Question]

recently my wifi greyed out so I restored my phone but that didn't work so this indicates that this is a hardware problem.i need to replace my wifi chip but I don't have warranty so I don't know how much it would cost to replace it. I need to go to the apple repair store. My dad works in bell and this phone is from his company so he isn't sure if we should go to the apple repair store. HELP!!

 

[kch50428]

Take it to an Apple Store Genius Bar or Apple authorized service center...they will check it out and let you know what your options are.