Simply amazing! Used this guide to replace the wifi antenna and flex cover and after about an hour voila', it works! As others may have found, I believe the real problem is the small piece of insulation on the wifi antenna itself. Mine was stuck to the upper glass side of the case whereas the new one had it affixed to the antenna itself. Take your time and label each size screw as you go along and you'll do fine (I simply labeled a piece of scotch tape and placed the screw on it).