Go to settings in your iPhone and make sure Airplane mode is off and you need to have a Carrier
Then go to General – scroll down – enter Reset – Reset Network Settings – enter Reset Network Settings
Your iPhone will refresh and reboot and it will take 2 to 3 minutes to reboot.
After reboot go to Wi-Fi and switch ON the Wi-Fi, enjoy browsing…
Tags: iPhone Wi-Fi, Settings, Network problem, Internet connection