1. Find out if the hotspot option is included in your mobile plan. If yes, open up the personal hotspot menu by clicking on 'Settings', followed by 'General Network
2. Toggle on the 'Personal Hotspot' option. Set up a new password or keep the randomly generated one given to you by Apple, which happens to be safe enough.
3. Your iPhone should now start broadcasting a Wi-Fi signal. Go to your computer or laptop and view all the wireless connections. Select 'iPhone'.
4. Following this, the computer will prompt you to enter the network security key. Type in the chosen password, click OK, and hey, your iPhone's now a Wi-Fi hotspot!