In reply to a post by epyon:

Thats not a thing anymore i don't think?

All(most) plans come with tethering data allowance now.

PAYG no tethering allowed, but works at lowest QOS priority (you get what is left over) when you use a mobile device that does not report to 3 that your tethering but the DPI picks up you Might be tethering (3 prefers to slow down people then block it out right as DPI tethering tection is not perfect and you can lose customers over an incorrect detection)

most of the contracts on 3 have tethering (as far as i know all of them do) 30GB now as well witch is All tetherable (most likely what i am going to switch my plan to it as i use it as backup for when a company's internet dies, 12GB would of not been enough)