iPhone

reference: https://support.apple.com/en-us/HT204023#:~:text=steps%20to%20connect%3A-,Wi%2DFi,to%20the%20Wi%2DFi%20network.

  1. On your phone navigate to Settings > Cellular > Personal Hotspot or Settings > Personal Hotspot and turn that option on
  2. The name of the hotspot is listed in the "To Connect Using Wi-fi" section on this screen and the password is displayed near the top of this page 
  3. Stay on this screen until you’ve connected your other device to the Wi-Fi network.
  4. On the device that you want to connect, go to Settings > Wi-Fi and look for your iPhone or iPad in the list. Then tap the Wi-Fi network to join. If asked, enter the password for your Personal Hotspot.