As long as you are in range of a cellular network (1-5 bars at the top of your screen ) you will be able to send and receive phone calls and messages. But for anything else, like web browsing, email or using maps, you'll need a data connection. Here's how to make sure you're always connected.
Quickly toggle your data connection on or off from the notifications screen.
Data transferred over a Wi-Fi network doesn't count against your data plan and Wi-Fi networks are often faster. To connect to a Wi-Fi network:
If you see error messages such as Unable to connect or "Server not found when you try to visit a website, it's possible that you have no Internet connection.
Follow these steps to verify that you're connected:
If you've verified that you have a Wi-Fi or data connection and you still get the Server not found error when trying to load a website, it could be an issue with the website itself. Clearing cookies and stored data may help.
For more information, see Clear browsing history and cookies.