When you need an internet connection for another device, share your phone's:
Your mobile plan must support data sharing. If you don't know, contact your carrier.
Check that:
Tap Wi-Fi hotspot and do any of the following:

Turn Use Wi‑Fi hotspot on 
When your hotspot is active, you'll see 
Set up the connection.
| To connect | Do this |
|---|---|
| A phone |
|
| Other device |
|
To see the number of devices connected to your hotspot:

By assigning a password for your hotspot, you ensure that people can't connect to your hotspot without your knowledge or permission.
To disconnect all devices and prevent them from reconnecting:
To connect a device to the Internet using your phone's mobile data and a USB cable:
Connect your phone to your computer with a USB cable.
Turn on USB tethering to start the connection.
You'll see 
To stop the connection, tap the notification and turn off USB tethering, then disconnect your phone and computer.
To connect a device to the Internet using your phone's mobile data and a Bluetooth connection:
Turn on Bluetooth tethering to start the connection.
To stop the connection, turn off Bluetooth or press and hold 
If you're having issues, try these troubleshooting steps: