Q: wifi can't use
My Iphone 6's wife can't use.
Posted on Jan 8, 2016 4:11 PM
by Lawrence Finch,Apple recommended
Mac OS X
See this: If Wi-Fi is grayed out or dim on your iPhone, iPad, or iPod touch - Apple Support
If that doesn't resolve it you most likely have a hardware problem.
Posted on Jan 10, 2016 12:32 PM