Yes you should...and you should immediately lose your unlimited plan the moment you do
I think it's only fair that if you offer an unlimited plan, it really should be unlimited. Or at least the cap should be sky high.
Therefore, at least AT&T is being honest in doing away with their unlimited plan, in that it never really was unlimited.
At the same time, by doing away with unlimited, they also (IMO) did away with any excuse they had to charge for tethering. When AT&T had an unlimited plan, I think they had a plausible excuse to charge for tethering. Note that they had several different unlimited data plans, depending on the type of phone. This recognized the reality that different phones consumed different amounts of data. So they could claim that the plan was for unlimited phone data, and not for tethering.
Another reality that is (again IMO) slowly sinking in is that the new generation of smartphones consume as much data as a laptop. After all my phone runs the same OS as my laptop (eg Linux). (Nope I don't do Windows.) My phone runs a full internet browser just like my laptop. In fact, I can install the FireFox app for Android. Several browsers give you the full internet browsing experience on your phone.
So the difference between phone data and laptop data has almost completely disappeared.
Like I said earlier in the thread, I'm not entirely convinced that you should be able to tether with an unlimited data plan. But I think in the long run this is where we'll end up.
