Updated 6.1.3 IOS & later found my iphone lost WIFI option.
Wifi option was greyout & unable to enable WIFI option.
My signal strength with be changed to No Service often.
iPhone 4S, iOS 6.1.3, My signal strength with be changed
Was this phone hacked to carrier unlock or jailbreak?
No, it is not.
Its a unlocked phone purchased in apple store.
I have reset the phone as below.
1. reset network settings. - No result.
2. reset all settings - No result
3. Erase all content and settings - No result
In Settings - General - About - Wifi Address is Showing N/A.
I wonder if your Wifi MAC begins with F0:DC:E2.
If it's N/A, you can check Bluetooth's MAC, since normally the first 5 hex-digits are identical.
Bluetooth MAC showing as - A8:FA:D8:0B:D5:0F
WIFI GRAYOUT
