It will be possible to share the internet connection of your iPhone with other devices via Wi-Fi, Bluetooth or USB connection.
All you have to do is to enable the Personal Hotspot feature and make sure that your mobile carrier supports this option.
On your iPhone, go to Settings > General > Cellular.
Turn on "Personal Hotspot"
Set up the Wi-Fi password.
From there you can search for your new Wi-Fi hotspot from another device.