Why my Samsung Galaxy s3's Wifi Hotspot is not working?

[AC Question]

My new Samsung Galaxy s3's wifi hotspot function is not working, When ever I try to turn on the data sharing option, it shows "turning on wifi hotspot" but never working.
Please help me to find a solution.

 

[B. Diddy]

Welcome to Android Central! Which carrier do you have? Are you sure your data plan includes hotspot usage? It often requires an extra fee.

 

[Sanjusree]

my data plan is free for hotspot usage. Handset model is GT-18200.