my iphone 4s will not connect to any wi-fi, it cant even find any wi-fi no matter where i go, everyone else in my house can connect to the wi-fi so its not the internet box. i have tried resetting the network, ive tried holding the home button and power off button, and i even went as far as buying the screwdriver set to look at the wi-fi antenna, which was in place.and after all that, my phone is still not showing any wi-fi connections. is there any thing else i can do. i cant upgrade until december