How to use my Apple iPhone 4S as a portable Wi-Fi hotspot
You can use your Apple iPhone 4S as a portable Wi-Fi hotspot. This lets you share your phone's Internet connection with other devices via Wi-Fi.
Please note: When other devices use your Wi-Fi hotspot, they use data from your mobile service. Charges may apply.
1. Touch Settings.
2. Touch Mobile Data.
3. Touch Personal Hotspot.
4. Touch the slider to turn Personal Hotspot on.
5. If Bluetooth is turned off, the phone will prompt you to turn it on. Touch Turn on Wi-Fi and Bluetooth.
Note: You can also select USB Only if you have a USB cable.
6. To connect to the iPhone, choose the iPhone's name on the connecting device and enter the password shown on the iPhone.