Use Personal Hotspot to share your iPhone Internet connection. Computers can share your Internet connection using Wi-Fi, Bluetooth, or a USB cable. Other iOS devices can share the connection using Wi-Fi. Personal Hotspot works only if iPhone is connected to the Internet over the cellular data network.
Note: This feature may not be available with all carriers. Additional fees may apply. Contact your carrier for more information.
Share an Internet connection. Go to Settings > Cellular and tap Set Up Personal Hotspot-if it appears-to set up the service with your carrier.
After you turn on Personal Hotspot, other devices can connect in the following ways:
Note: When a device is connected, a blue band appears at the top of the iPhone screen. The Personal Hotspot icon appears in the status bar of iOS devices using Personal Hotspot.
Change the Wi-Fi password for iPhone. Go to Settings > Personal Hotspot > Wi-Fi Password, then enter a password of at least 8 characters.
Monitor your cellular data network usage. Go to Settings > Cellular. See the Safety, Handling & Support section -> Cellular settings.