Q: personal hotspot

Does your carrier support Personal Hotspot? If your carrier supports Personal Hotspot, is such properly provisioned on your account? You won't have that setting unless both of those conditions are met. Read here:

http://support.apple.com/kb/HT4517

Not sure if this is your problem, but if you haven't used it yet, than it won't show up on the first page of settings yet. To set it up, go to settings> general> cellular> and go to personal hotspot. If the personal hotspot doesn't show up under cellular, then your carrier probably doesn't support it.

Thanks men, this solved my problem. all i had to do was change my carrier and the personal hotspot showed up all by itself

BEST SOLUTION: Go to settings-cellular- cellular data network,  then scroll down to personal hotsot, then do the APN setup, after that go back to settings, your hotspot will then appear under cellular. This works perfect.  give us like on  www.facebook.com/computersgh