my I phone 6 plus ios 9.3.2 but can not slide open for wifi .so many time I tried but can not slide wifi on. so what I need
to do pls discribe me
Try Reset Network Settings
Reset Network Settings Settings>General>Reset>Tap Reset Network Settings. You may need to enter your wifi passcode back in afterwards.
If that doesn't work, you may need to restore your phone as new. Not from a back up.
If a restore doesn't work, you should take it to an Apple Store and let the Genius Bar have a look.
Or call Apple Support.