So I have a couple year old iPhone 4s that is in real good shape. It was my wife's old phone that we gave to our daughter to use as a iPod touch (no cellular). All of a sudden (maybe after ios7.x) it cannot connect to any wifi network. It can see the networks and scan them, but when it tries to connect it just says unable to join. If I look a the logs in my router, there is no evidence that it even tried to connect. I have reset network settings, restored as new, upgraded to the latest OS, etc Took it to work and tried to hook it up to our many wifi spots and get the same issue. Is the chip just dead..? anything I can do to bring it back to life or is it pretty much a useless device now. Can really only listen to music by syncing it via usb cable.