Settings | WiFi
WiFi is where you can check your network connectivity or connect to a different network. You’ll see the option for a WiFi or Ethernet connection. Tap the tab you want to connect with, or confirm that connection. A check mark will show next to the network that you are currently connected to.
See Connecting to WiFi or Ethernet for more detail.
If you’re having trouble connecting to the internet, take a look at our Network Connection Troubleshooting guide.