Hotspot function is only available for Iphone 4 and above.
1.Go to settings > click on mobile data
2. Now click on Mobile data Network
3. Scroll down and come to personal hotspot section and then click on APN
4.Now type your service provider’s APN in APN column
Airtel Users: Airtel Internet
Idea Users : internet
Vodafone Users : Vodafone Internet
BSNL Users : bsnlnet
JIO Users : actually enable personal hotspot directly.
5. Go back to main setting page and you will find an option to enable the hotspot. Click on personal hotspot.
6. After clicking on turn on you will get a pop up message as shown below.
If you would like to connect hotspot to your electronic gadgets which supports wifi then select WiFi and Bluetooth. You can also select USB tethering by clicking on USB ONLY.