Reason You could not find on google:

• Wi-Fi and mobile networks are disabled when using Airplane mode. Airplane mode is activated if an aeroplane icon appears at the top of the screen. To exit Airplane mode, press the following keys: Go to the Settings tab. More can be found under 'Wireless and networks.' Airplane mode must be turned off. At the very top of your screen, you should see a Wi-Fi icon. Rerun your search to see if it yielded any results.
• If you're still having trouble, try the following steps: If the indicator has a '?' next to it, it means that Wi-Fi is turned on but that you are not connected to a network. To turn on Wi-Fi and select a network, follow the steps below. You're connected to a network but not to the Internet if the icon has a '!' in it. Make that you've selected the correct network. You might require a password if you're on a public network. To get a sign-in screen, open a webpage in your browser.
•  Move to a better-covered spot.-There are no connections in some underground and remote sites. Make an attempt to connect in a different location.
• Get in touch with your cell phone service provider Contact your service provider if your device has frequent connectivity issues.

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