I am currently on a 5GB $30 T-Mobile plan ans i have no wifi right now. So I was thinking about upgrading to the $70 unlimited data phone plan and 500 mb tethering.
Thing is since I can't find my original SIM card I don't want to upgrade and not be able to come back if tethering would somehow be separated (meaning the data is taken from the 500 mb) I don't think it should but that's why I asked.
I originally posted in the general iPhone section but my question was moved to iOS hacks.
My next option is to buy a MiFi device and use data that way, but tetherme works lovely and no sense in an additional device if I don't need it.