Android devices come with a built-in cellular radio that allows you to connect to cellular networks. However, if your Android device is not connected to a cellular network, you can still use it to access the Internet and other applications. To connect your Android device to a cellular network, follow these steps:

  1. Open the Settings app on your Android device.
  2. Under Wireless & Networks, tap Mobile Networks.
  3. If your device is connected to a cellular network, you will see the network name and carrier information listed under Network Type. If your device is not connected to a cellular network, you will see an option to Connect Now under Network Type.
  4. Tap Connect Now and enter the phone number of the carrier or Wi-Fi network that you want to connect to. You can also search for available networks by entering their names or addresses. If you are using a Wi-Fi connection, enter the name of the Wi-Fi network that you are connecting to. Tap Next if prompted for security questions or tap OK if everything looks correct.
  5. After confirming that you want to connect to the selected network, Android will attempt to establish a connection with the carrier or Wi-Fi network and display a message indicating whether or not the connection was successful. If it was not successful, try connecting again later or try using another method of connecting such as Bluetooth or USB cable connection ..