You'll have to provide a bit more info if you want assistance from the Community Forum.
What have you tried in order to set it up?
What goes wrong?
Any error messages?
Is it an iPhone by any chance?
If so then see here - the section titled "A note about personal hotspot setup on iPhones"
If you need to contact 48 support about this then see the link in my signature below or email them at support@48months.zendesk.com
BTW there's no need to post three times in separate threads about the same issue.
I had to merge the three threads in into one.
