Why won't my iPhone 4S let me turn on the wifi? [duplicate]

In my iPhone settings where I'm supposed to turn Wi-Fi on or off, it is just grey & says 'No Wi-Fi'.

I have reset network settings, restored phone, re-synced everything, but still have this problem. Does anyone know how to fix this?

Solution 1:

Same issue - a perfectly good, 7 month old i4S that is out of Apple warranty (original phone got wet, I went to Apple Store and bought a $199 replacement phone but they only provide a 90 day warranty of that vs. 1 year on a 'new' phone from a cell carrier - go figure).

Apple hosted 2 chat support sessions and 1 store visit, at which time they said it's a hardware issue, out of warranty, buy a new phone & good luck. So I am going to buy a new phone - but it won't be an iPhone!

So - in summary, your issue is likely a hardware issue and you might want to learn from someone who regrets paying for a "repair" rather than just buying a new device or other warranty extension.

Solution 2:

See this Apple support page: http://support.apple.com/kb/TS1559

This also is typical of hardware problems relating to wifi chip or an internal antenna connector failure, either of which indicates that a trip to a Genius Bar may be in order. Apple service also is available at https://locate.apple.com